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

<passage>:
to gyp a space-lane sucker. Or so they thought! Angus Johnson knew differently. He charged them five buckos for a glass of water—and got it! [Transcriber's Note: This etext was produced from remaining pair. The bartender, a big man resembling the plumpish Harvey in build, was leaning negligently on the counter, ordering this impossible being to fill the partly-emptied bottles, squeeze fruit things to know there are always more." He led the way inside. Through thirst-cracked lips he rasped: "Water—quick!" Without a word, the bartender reached under the counter, brought out two glasses of water. The interplanetary con-men drank noisily, asked proclaiming this magic medicine the sole panacea in the entire history of therapeutics." "We did. He came near starving and moved on to Titan. Ships don't land here unless they're in trouble." "Then where's the water lead-in? We'll fill up and push off." "Mayor takes care of that," replied the saloon owner. "If you gents're finished at the bar, your drinks'll be forty buckos." Harvey grinned puzzledly. "We didn't take any whiskey." "Might as well. Water's five buckos a glass. Liquor's free with every chaser." Harvey's eyes bulged. Joe gulped. "That—that's robbery!" the lanky man The round face of the barkeeper had assumed an aggrieved expression. "Folks are always thinkin' the other feller's out to do 'em," he said, shaking his head. "Lemme explain about the water here. It's bitter as some kinds of sin before it's purified. Have to bring it in with buckets and make it sweet. That takes time and labor. Waddya think—I was chargin' feller critters for water just out of devilment? I charge because I gotta." "Let's say ten buckos a liter," the mayor said. "On account of the quantity, I'm able to quote a bargain price. Shucks, boys, it hurts me more to charge for water than it does for you to pay. I just got to, that's all." The mayor gestured to the native, who shuffled out to the tanks with wetted his lips expectantly. Harvey bravely counted off the bills. He asked: "But what are we to do about replenishing our battery fluid? Ten buckos a liter would be preposterous. We simply can't afford it." Johnson's response almost floored them. "Who said anything about charging you for battery water? You can have all you want for nothing. It's just the purified stuff that comes so high." After giving them directions that would take them to the free-water picked up buckets that hung on the tank. "Johnson, as I saw instantly, is the victim of a difficult environment, and must charge accordingly." "Just the same," Joe griped, "paying for water isn't something you can get used to in ten minutes." In the fragile forest, they soon came across a stream that sprang from the igneous soil and splashed into the small pond whose contents, according to the mayor, was theirs for the asking. They filled their "What's this doing here?" Harvey asked, puzzled. "I thought Johnson had to transport water in pails." "Wonder where it leads to," Joe said uneasily. "It leads "I am growing suspicious," he said in a rigidly controlled voice. But Joe was already on his knees, scooping up a handful of water and tasting it. "Sweet!" he snarled. They rushed back to the first pool, where Joe again tasted a sample. His mouth went wry. "Bitter! He uses only one pool, the sweet one! The only thing that needs purifying around here is that blasted mayor's conscience." "Joseph!" he exclaimed, looking at his partner in alarm. "Don't you drink until most of the liquid was gone. Then he stepped back and waited for the inevitable result. this one before it grew formidable." The mayor's eyes became clouded mirrors of an inward conflict. "If you don't charge too much," he said warily, "I might think of buying some." "We do not sell this unbelievable remedy," Harvey replied with dignity. "It sells itself." "'Course, I'd expect a considerable reduction if I bought a whole case," said Johnson. talk again. "Medicine," Harvey propounded, "should taste like medicine." To Joe he his murderous silence and cried: "What kind of a dirty trick was that, giving me poison instead of that snake oil?" "That was not poison," Harvey contradicted quietly. "It was our specific for all known ailments, with the intention of selling yonder asteroidal tin-horn a bill of medical goods—an entire case, mind you. Was I to mix the extract with the water for which we had been swindled to the tune of ten buckos a liter? Where would our profit have been, then? No I had to use the bitter free water, of course." "But why use it on me?" Joe demanded furiously. Harvey looked reprovingly at his gangling partner. "Did Johnson ask to that swindler cheated us, besides whatever other funds or valuables he possesses. We could not be content with less." streamlined panacea he would be a spectacular attraction for bucolic Harvey and Joe looked at each other. They hadn't been thinking about food at all, but suddenly they realized that they were hungry. "It's only water we were short of," Harvey said apprehensively. "We've got rations back at the ship." " "Your hospitality," said Harvey, "depends on the prices you charge." "Well, if that's what's worrying you, you can stop worrying," answered can't get anywhere else for any price." Swiftly, Harvey conned the possibilities of being bilked again. He saw chance of company. Genius, the six-armed native, appeared from the dingy kitchen with two menus in one hand, two glasses of water in another, plus napkins, which were on the house. Then he stood by for orders. Harvey and Joe studied the menu critically. The prices were phenomenally low. When they glanced up at Johnson in perplexity, he "Think of a fast one fast," Joe agreed. "You're right." "But I dislike having to revise my opinion of a man so often," complained Harvey. "I wish Johnson would stay either swindler or honest merchant. This dinner is worth as least twenty buckos, yet I estimate our check at a mere bucko twenty redsents." foolish.'" "I don't get the connection," objected Johnson. "Well, by obliging us to pay such a high price for your dinner, you put out of your reach the chance of profiting from a really substantial the peculiar creature you call Genius. But by reducing our funds the way you have—" "Who said I wanted to sell him?" the mayor interrupted. He rubbed his "That's right," Johnson came back emphatically. "But what would your offer have been which I would have turned down?" "Which one? The one we were going to make, or the one we can make now?" "Either one. It don't make no difference. Genius is too valuable to sell." "Oh, come now, Mr. Johnson. Don't tell me no amount of money would tempt you!" would probably have had weight and mass. He was bursting with questions, but he was obviously afraid they would cost him money. For his part, Harvey allowed that curiosity to grow like a Venusian amoeba He has spurned our generosity. We have now the chance to continue our study, which I am positive will soon reward us with the key to an enormous fortune." saying I'll buy, but what is it I'm turning down?" "For three years, Joseph and I lost sleep and hair, trying to detect

<question>:
Why does Joseph lie about the water supply?

<options>:
A There isn't a lot of water there, and he needs to be able to ration it out.
B He wants people to believe they need to pay for it.
C He wants to keep the fresh water for himself.
D He thinks that people would prefer to buy filtered water.

<answer>:

B