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

<passage>:
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. Today, he's preaching to the converted. Alex Walker, the chairman of the 250-person Ekopia community in Northern Scotland, listens at the back. The Eko has been the main means of buying everything from beer to bananas in Ekopia since Walker founded it 20 years ago. On an adjacent table, Tracy Duff, a community learning and development worker from Clackmannanshire Council, digs out some papers. She runs the Clacks Youth Timebank, a scheme where 12- to 15-year-olds can earn credit for volunteering. Taking notes up front is Ailie Rutherford, one of the people who organised the meeting. Rutherford runs the People's Bank of Govanhill, a currency that changes value depending on the income of the user. "I don't see any reason why we shouldn't invent our own currency and play with it," she says. 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. The founders of the Brixton Pound wanted to do something to stop 80p of every £1 spent locally from leaking out of the area into the pockets of corporations, at the expense of small local traders. So they printed a currency that would have the same value as the pound, but could only be traded in independent Brixton shops, where the shopkeeper would also have to spend it locally. This year the Brixton Pound got its own cashpoint, from where people can withdraw local banknotes bearing colourful images of local heroes, like David Bowie and secret Agent Violette Szabo, to spend in over 150 local shops. It can also be used by residents to pay council tax and by employers to pay wages. No two local currencies are exactly the same. But the Brixton Pound and other recent schemes follow the example ten years ago of the Totnes Pound, a 'complementary currency': that is, one supplementing the national currency. As fears for financial stability took hold during the recession, complementary currencies grew in popularity. The Bank of England does not consider these forms of currency legal tender, but the notes hold value in the same way as a gift-card from a department store, with the same kind of restrictions about where they can be spent. Proponents say complementary currencies boost spending in smaller geographical areas, which can have environmental benefits as businesses cut transport distances to deal with local suppliers. Detractors say they have no real economic impact and work only as a game for the middle classes, who can afford to buy from independent shops rather than chains. 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 don't understand money," Molly Scott Cato, Green MEP for the South West of England and Gibraltar, says over the phone. Scott Cato says the fish-in-water problem – the idea that sterling is so ubiquitous, it is never questioned – is the biggest challenge for complementary currencies. She knows all about it as a founder of the Stroud Pound in 2010, a currency that has since gone out of circulation. 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. 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." 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. After years of researc,h McCann believes the only way complementary currencies can create real value for local economies is if they make transactions happen that wouldn't otherwise have taken place. "They need to create additional spending power. This is this what the local currencies, despite all their good points, fail to do," McCann says. Every time a Brixton Pound transaction is made, 1.5 per cent goes into a Brixton Fund. This is used to give micro-grants of between a few hundred and £2000 to local projects and community groups. "We aim to target projects that aren't large enough to apply for more formal grant funding," says Lucy Çava, project manager at the Brixton Pound. "We see this as part of community building – linking the Brixton Pound user with community groups, so both groups become more visible to each other through the currency and fund. This is particularly important in Brixton because of the gentrification debates which are very salient round there," Çava says. Meanwhile, the people behind the Bristol Pound are readying a mutual credit network called Bristol Prospects. Through this network, businesses in Bristol can exchange credit in the form of loans that are neutralised within the network, helping one another to grow without relying on the high rates of commercial lenders. Once operational, loans offered through the Prospects network will have negative interest, so that businesses are encouraged to pass credit on as quickly as possible. "That's the plan," says Clarke, "because it's rather like a hot potato: people will want to pass it on."

<question>:
Which complementary currency didn't work out?

<options>:
A The Stroud Pound
B The Totnes Pound
C The Liverpool Pound
D The Brixton Pound

<answer>:

A