Read the following passage and questions, then choose the right answer from options, the answer should be one of A, B, C, D.

<passage>:
It's lunchtime at Glasgow Chambers in late November, and Councillor George Redmond is getting worked up at the prospect a Glasgow Pound. "We would be Glasgow-centric about it," he says conspiratorially, as though there is any other way to be. "Can you imagine having the face of Billy Connolly on our local currency? Or Alex Ferguson, or Kenny Dalglish?" Inventing an alternative to sterling might sound far-fetched, even illegal. But it's not that strange. In the UK we think of the pound like fish think about water, which is to say not at all. It might never have occurred to many of us that there are other types of exchange that can stand in for ragged bank notes tucked away in pockets, or other objects that can stand in for those notes. Not every country is so lucky. In crisis-hit Greece, where the euro can be hard to come by, businesses and citizens have turned to bartering using a points system where goods like pianos, pot and pans can be exchanged for security services or loaned farming equipment. In India last year, desperate people burned sacks of illegal cash after the government withdrew two high-denomination notes as part of a crackdown on corruption. Hoarders woke up to discover the banknotes under their mattresses were suddenly worthless. The pound has been trading at its lowest level since 1985 since the UK voted to leave the European Union and there are fears that it could dip further as Brexit ensues. Timebanks, local exchange trading systems (LETS) and digital inventions like bitcoin can provide alternative ways for people to pay for goods and services when mainstream currencies hit crises. But they will only work if Britons are ready to accept that they have the power to invent their own currency. "At the moment, if the pound stops working for us, the whole economy grinds to a halt because there aren't alternatives," Duncan McCann, a researcher at the New Economics Foundation, tells those gathered in a gilded room at Glasgow Chambers to discuss the Glasgow Pound. McCann is a long-time advocate of alternative means of exchange. He is behind the ScotPound, a proposal for a new national currency for Scotland that emerged after the referendum on Scottish independence. It's an idea he no longer thinks will work, because the debate, since Brexit, has shifted from the currency issue back to ideas about Scottish independence. Everyone has gathered to decide what a Glasgow Pound might look like at a time when many are asking if local currencies can work at all. Councillor Redmond says Glasgow has been closely watching existing alternative currencies like the Brixton Pound in London, which was introduced in 2011. In Britain, there are now schemes in Totnes, Lewes, Brixton, Bristol and Exeter. Hull has its own local digital currency that can be earned from volunteering and used to pay council tax. Kingston, Birmingham and Liverpool have schemes underway. Glasgow could be next. But the working group has some serious questions to answer first, not least: do complementary currencies actually work? "[People] think they put money into a bank and someone else takes it out. What they don't understand is that banks have the power to create money. We've given the power to create money to private corporations and people don't understand that we can have it back," she says. In Stroud, suspicion of the local currency among local businesses became a barrier to success. Scott-Cato said traders refused to join the scheme because they were "running a business", as though putting the community first and placing the needs of others as equivalent to their own was in itself bad business practice, or as though they were somehow being disloyal to sterling. The Bristol Pound (£B) entered into circulation in September 2012. By June 2015, 1m £B had been issued, with £B700,000 of that still in circulation. In a population of some 450,000 people, that's the equivalent of each Bristolian carrying less than £B2 in change in their pocket. Without enough currency in circulation, it ceases to work. Scott-Cato says Stroud's size meant meant the Stroud Pound was never viable: "We couldn't get the velocity of circulation right, which contrasts with the Bristol Pound." Clarke also says the small scale of local currencies means they are "always scrabbling around looking for money". One way founders of the Bristol Pound have addressed his is by setting up an umbrella organisation, the Guild of Independent Currencies, to share information between local currencies in the UK and help new organisations. "At the moment we're all reinventing the wheel every time," Clarke says. Technology might also have a solution. Peter Ferry, a commercial director, travels to Glasgow to tell those working on the Glasgow Pound that that his company Wallet has come up with a way to use the blockchain, the technology behind bitcoin, to make it easier for people to use multiple types of currency. "There might be many currencies around the country that people want to use. We need to make it simple for them to do that and also to make it simple to earn these currencies in many ways," he says. "Bristol is seen as a quirky, individualistic kind of place," Clarke says. "When we first produced the Bristol Pound note, people were really proud of it. It got through to people not just sat around coffee shops. I'm not sure a London Pound would work, because people identify with their local area in London rather than the city as a whole." Bristol Pound users don't have high incomes necessarily, but surveys show they are engaged with their local community and they have a higher educational attainment than average. In the years since the financial crisis, as local authority budgets have shrunk, some areas have relied heavily on engaged communities to fill in gaps in public services. By contrast, deprived areas where people cannot afford time and money to put into their community have become more deprived, making them even harder for local currencies to reach. "It is difficult to get into more disadvantaged areas," Stephen Clarke says. "We have a ten-year life expectancy gap between different parts of the city. When you go to disadvantaged areas with the Bristol Pound hat on you realise there aren't independent shops there, there's an Aldi and Lidl and that's it." More than a third of children grow up in poverty in Glasgow. A Glasgow Pound might struggle to get poorer families to buy into a local currency that ties them to shopping at more expensive, independent shops, rather than getting deals at big supermarket chains. When Scott-Cato and her colleagues wrote about the experience of setting up the Stroud Pound, they said it was telling that complementary currencies have been accused of being a game for middle-class people, rather than a genuine economic solution. Perhaps for that reason, experts like Duncan McCann have stopped thinking of complementary currencies as a one-size-fits-all solution. He said they can function as a kind of 'gateway drug' to introduce people to a new way of thinking about money. "That is especially for those who use it, but also for those who just become aware of it," he says. Nothing is tying Glasgow to existing models for complementary currencies. But during the first meeting about setting up the Glasgow Pound, the workshop shows just how hard it would be to invent a new system that works for everyone. Each table is handed a wad of Post-it notes and a piece of white paper. A table leader asks everyone to write on the Post-its what they want the Glasgow Pound to achieve. Elbowing teacups out the way, people get to work. They scrawl a dizzying number of proposals, from keeping more wealth in the local area to empowering people who feel cut out of the national economy, or to moving towards land reform and saving the environment. Team leaders try to assemble these ideas in themes to report back to the room.

<question>:
What is a big obstacle for the Glasgow Pound?

<options>:
A There is a ten-year life expectancy gap between different parts of the city.
B More than a third of the families grow up in poverty. A local currency makes shopping a little more expensive.
C They must be used at independent shops, instead of big supermarket chains.
D In deprived areas, people cannot afford time and money to put into their communities.

<answer>:

B