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

<passage>:
Harvey and Joe were the slickest con-men ever could devote his life to improving this lonely worldlet is obviously a "Therefore, you are the man who could unravel the problem!" though his parched tongue was almost hanging out. But Joe Mallon, with "What is?" asked Harvey through a mouthful of cotton. Paying no attention to them, it was carrying a case of liquor in two hands, six siphons in two others, and a broom and dustpan in the remaining pair. The bartender, a big man resembling the plumpish Harvey in build, was leaning negligently on the counter, ordering this for more, until they had drunk eight glasses. Meanwhile, the bartender had taken out eight jiggers and filled them with whiskey. Harvey and Joe were breathing hard from having gulped the water so proclaiming this magic medicine the sole panacea in the entire history Harvey's eyes bulged. Joe gulped. "That—that's robbery!" the lanky man crook—robbing poor spacemen! You—" "You dirty crook!" Joe roared. "Robbing honest spacemen!" Harvey nudged him warningly. "Easy, my boy, easy." He turned to the bartender apologetically. "Don't mind my friend. His adrenal glands are because I gotta." "Friend," said Harvey, taking out a wallet and counting off eight "Nope. That's my son, Jed. Angus Johnson's my name. Folks here just call me Chief. I run this town, and run it right. How much water will you need?" preposterous. We simply can't afford it." Johnson's response almost floored them. "Who said anything about "Now do you see, my hot-tempered colleague?" said Harvey as he and Joe a faint suspicion alive in him. So he called Harvey and they went to "What's this doing here?" Harvey asked, puzzled. "I thought Johnson had from ." Five minutes later, panting heavily from the unaccustomed exertion of Harvey slowly. His eyes grew cold. "Joseph, the good-natured artist in frozen in the doorway. "Glad you didn't. Now you can meet my son, Jed. Him and me are the whole Earthman population of Johnson City." "You don't need any more," said Harvey, dismayed. Johnson's eight-foot son, topped by a massive roof of sun-bleached hair and held up by a foundation that seemed immovable, had obviously been born and raised in low gravity. For any decent-sized world would have kept him down near the general dimensions of a man. He held out an acre of palm. Harvey studied it worriedly, put his own hand somewhere on it, swallowed as it closed, then breathed again when his fingers were released in five units instead of a single compressed one. "Pleased to meet you," piped a voice that had never known a dense drooping like a bloodhound's. "Bring him in here!" Johnson cried. "I mean, get him away! He's coming down with asteroid fever!" "Of course," replied Harvey calmly. "Any fool knows the first symptoms every year, and I ain't hankering to have it in an off-season. Get him out of here!" "In good time. He can't be moved immediately." his gigantic offspring were cowering across the room, trying to breathe in tiny, uncontaminating gasps. Instead of replying, Harvey hurried outside to the ungainly second-hand When Joe tried to pull away, Harvey was inexorable. He made his partner La-anago Yergis never fails, my friend," Harvey explained. "By actual test, it conquers asteroid fever in from four to twenty-three minutes, depending on the severity of the attack. Luckily, we caught this one before it grew formidable." "We do not sell this unbelievable remedy," Harvey replied with dignity. buckos." Johnson did not actually stagger back, but he gave the impression of "Make it four fifty," quavered Johnson. "I dislike haggling," said Harvey. Harvey took a glass from the bar and poured him a generous sample. The "Medicine," Harvey propounded, "should taste like medicine." To Joe he Harvey looked reprovingly at his gangling partner. "Did Johnson ask to possesses. We could not be content with less." "Well, we're starting all right," admitted Joe. "How about that thing with six arms? He looks like a valuable. Can't we grab him off?" Harvey stopped filling bottles and looked up pensively. "I have every hope of luring away the profitable monstrosity. he would be a spectacular attraction for bucolic Joe was still dazed by that monetary vista when he and Harvey carried down carefully. Then he took the elaborate bottle-opener Harvey gave he gagged. "That's the stuff, all right," he said, swallowing hard. He counted balanced between his pleasure at getting the fever remedy and his pain Harvey and Joe looked at each other. They hadn't been thinking about "Your hospitality," said Harvey, "depends on the prices you charge." Swiftly, Harvey conned the possibilities of being bilked again. He saw less private, though nobody else was in the saloon and there was little 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, silverware, a pitcher, plates, saucers, cups, and their cocktails, Harvey and Joe studied the menu critically. The prices were For an hour they were served amazing dishes, both fresh and canned, the culinary wealth of this planetoid and all the system. And the service was as extraordinary as the meal itself. With four hands, Genius played deftly upon a pair of mellow Venusian viotars , using his other two hands for waiting on the table. "We absolutely must purchase this incredible specimen," Harvey to women like Mrs. van Schuyler-Morgan, merely for his hire." complained Harvey. "I wish Johnson would stay either swindler or honest As if on cue, Genius came out and put the check down between Joe and Harvey. Harvey picked it up negligently, but his casual air vanished in "What the devil is this?" he shouted.—"How do you arrive at this fantastic, idiotic figure— three hundred and twenty-eight buckos Johnson didn't answer. Neither did Genius Harvey focused on the microscopic print, and his face went pasty with "restaurateur," pocketed it. Meanwhile, Harvey tipped Joe the sign to the peculiar creature you call Genius. But by reducing our funds the fingers together and asked disinterestedly: "What were you going to offer, anyhow?" "It doesn't matter any longer," Harvey said with elaborate "Either one. It don't make no difference. Genius is too valuable to "Oh, come now, Mr. Johnson. Don't tell me no amount of money would "Ah, then you will consider releasing Genius!" Harvey was quick to pay out, for this was a genuine windfall. Then he Genius, and I'm going to miss him something awful." On a larger and heavier world than Planetoid 42, Johnson's curiosity 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 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 is it I'm turning down?" his greatest invention—this fourth dimensional radio!" "In simple terms," clarified Harvey, "the ingenious doctor discovered ourselves. Consequently, the man who could tap their knowledge would find himself in possession of a powerful, undreamt-of science!" "It does, Mr. Johnson! Only charlatans like those who envied Doctor a sensitive soul like his could

<question>:
What was so unique about Genius that made Joe and Harvey want to purchase him?

<options>:
A His impressive cooking
B His ability to haggle
C His useful mechanical skills
D His 6 arms

<answer>:

D