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

<passage>:
Johnson winced. "Is that what you want to unload on me?" "For a very good reason, sir. Patience is the virtue that will be 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 Planet Stories May 1943. remaining pair. The bartender, a big man resembling the plumpish Harvey in build, was leaning negligently on the counter, ordering this "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 managed to get out in a thin quaver. The barkeeper shrugged. "When there ain't many customers, you gotta make more on each one. Besides—" sometimes overactive. You were going to say—?" The round face of the barkeeper had assumed an aggrieved expression. 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 "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." 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." tasting it. "Sweet!" he snarled. 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. "How much?" asked the mayor unhappily. "For you, since you have taken us in so hospitably, a mere five hundred buckos." Johnson did not actually stagger back, but he gave the impression of doing so. "F-four hundred," he offered. "Not a red cent less than four seventy-five," Harvey said flatly. "Make it four fifty," quavered Johnson. "I dislike haggling," said Harvey. The final price, however, was four hundred and sixty-nine buckos and fifty redsents. Magnanimously, Harvey added: "And we will include, handicraftsmanship." Johnson stabbed out a warning finger. "No tricks now. I want a taste of that stuff. You're not switching some worthless junk on me." minute saw a grim battle between a man and his stomach, a battle which the man gradually won. "There ain't no words for that taste," he gulped when it was safe to 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." the same medicine that we will now manufacture. Thus, you were a guinea pig for a splendid cause." "Okay, okay," Joe said. "But you shoulda charged him more." he would be a spectacular attraction for bucolic suckers. Later, a brief period of demonstrating his abilities on the audio-visiphone. Then our triumph—we shall sell him at a stupendous figure to the zoo!" Suit yourselves. We treat our stomachs better here. And you're welcome to our hospitality." "Your hospitality," said Harvey, "depends on the prices you charge." "Well, if that's what's worrying you, you can stop worrying," answered the mayor promptly. "What's more, the kind of dinner I serve here you can't get anywhere else for any price." Swiftly, Harvey conned the possibilities of being bilked again. He saw none. "Let's take a look at the menu, anyhow, Joe," he said guardedly. 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 kitchen, attending to the next course. "He would make any society hostess's season a riotous success, which should be worth a great sum to women like Mrs. van Schuyler-Morgan, merely for his hire." "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." fantastic, idiotic figure— three hundred and twenty-eight buckos !" he simply put on the table, not a fingerbowl, but a magnifying glass. With one of his thirty fingers he pointed politely to the bottom of the menu. Harvey focused on the microscopic print, and his face went pasty with rage. The minute note read: "Services and entertainment, 327 buckos 80 redsents." "You can go to hell!" Joe growled. "We won't pay it!" 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 deal. My partner and I were prepared to make you a sizable offer for 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 fingers together and asked disinterestedly: "What were you going to offer, anyhow?" carelessness. "Perhaps you wouldn't have accepted it, anyway." "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!" "Nope. But how much did you say?" "Ah, then you will consider releasing Genius!" the wondrous instrument before its value can be appreciated. My partner will soon have it here for your astonishment." Joe's face grew as glum as Johnson's had been. "Aw, Harv," he protested, "do we have to sell it? And right when I thought we were getting the key!" chance now we must relinquish Fate to the hands of a man who might political speech-makers." "Do not jump to hasty conclusions," Harvey cautioned. "Another word, and I shall refuse you the greatest opportunity any man has ever had, with the sole exceptions of Joseph, myself and the unfortunate inventor of this absolutely awe-inspiring device." 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." turn it down. I hated to give it up after working on it for three whole years." "Now, hold on!" the mayor cried. "I ain't saying I'll buy, but what is it I'm turning down?" Joe returned and set the instrument down on the bar. His face "It does, Mr. Johnson! Only charlatans like those who envied Doctor Dean's magnificent accomplishments could deny that fact."

<question>:
How was Johnson convinced to buy the case astroid fever medication?

<options>:
A Proven statistics showing that it was the best antidote
B Joe's acting skills
C He felt feverish and thought he may have contracted the illness
D A price too good that could not be turned down

<answer>:

B