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

<passage>:
five buckos for a glass of water—and got it! [Transcriber's Note: This etext was produced from Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] that had been termed a spaceport. When Harvey staggered pontifically incoherent. They met in the doorway, violently. "We're delirious!" Joe cried. "It's a mirage!" "What is?" asked Harvey through a mouthful of cotton. Joe reeled aside, and Harvey saw what had upset his partner. He stared, hands, six siphons in two others, and a broom and dustpan in the juice and sweep the floor, all of which the native did simultaneously. "Water—quick!" "Strangers, eh?" he asked at last. lush manner. "We purvey that renowned Martian remedy, La-anago Yergis , the formula for which was recently discovered by ourselves in the ancient ruined city of La-anago. Medical science is unanimous in proclaiming this magic medicine the sole panacea in the entire history of therapeutics." "Yeah?" said the bartender disinterestedly, polishing the chaser glasses without washing them. "Where you heading?" "Out of Mars for Ganymede. Our condenser broke down, and we've gone chaser." crook—robbing poor spacemen! You—" bartender apologetically. "Don't mind my friend. His adrenal glands are sometimes overactive. You were going to say—?" 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 five-bucko bills, "here is your money. What's fair is fair, and you thirst." "If that's an apology, I accept it. Now the mayor'll discuss filling 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." get used to in ten minutes." "What's this doing here?" Harvey asked, puzzled. "I thought Johnson had to transport water in pails." from ." Five minutes later, panting heavily from the unaccustomed exertion of born and raised in low gravity. For any decent-sized world would have kept him down near the general dimensions of a man. atmosphere. feel well?" down with asteroid fever!" "Of course," replied Harvey calmly. "Any fool knows the first symptoms of the disease that once scourged the universe." "What do you mean, once frantically, "sulfopyridine, mustard plasters, rubs, inhalers, suction cups—" "Relics of the past," Harvey stated. "One medication is all modern man requires to combat the dread menace, asteroid fever." "What's that?" asked the mayor without conviction. few minutes, carrying a bottle. "Maybe you need another dose," Harvey suggested. Joe recoiled. "I'm fine now!" he cried, and sprang off the bar to prove " 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 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. "That would be the smallest investment you could make, compared with the vast loss of time and strength the fever involves." buckos." "There ain't no words for that taste," he gulped when it was safe to talk again. "Medicine," Harvey propounded, "should taste like medicine." To Joe he said: "Come, my esteemed colleague. We must perform the sacred task to which we have dedicated ourselves." 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 La-anago Yergis extract, plus." "Plus what—arsenic?" "Now, Joseph! Consider my quandary when I came back here to manufacture 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 the same medicine that we will now manufacture. Thus, you were a least as good as the first he gagged. " " the mayor grunted. "Powdered concentrates. Compressed pap. grinned, bowed and asked: "Everything satisfactory, gents?" , using his other two "It's been a great honor, gents," he said. "Ain't often I have Harvey. Harvey picked it up negligently, but his casual air vanished in a yelp of horror. !" "restaurateur," pocketed it. Meanwhile, Harvey tipped Joe the sign to schoolmasterish severity, "your long absence from Earth has perhaps made you forget those elements of human wisdom that have entered the folk-lore of your native planet. Such as, for example: 'It is folly to kill a goose that lays golden eggs,' and 'Penny wise is pound foolish.'" "I don't get the connection," objected Johnson. the peculiar creature you call Genius. But by reducing our funds the way you have—" offer, anyhow?" "It doesn't matter any longer," Harvey said with elaborate carelessness. "Perhaps you wouldn't have accepted it, anyway." "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 five-fifty." filial mammoth to keep you company." study, which I am positive will soon reward us with the key to an enormous fortune." years." saying I'll buy, but what is it I'm turning down?" his tragic death, you will recall, Dean allegedly went insane." He banged his fist on the bar. "I have said it before, and I repeat again, that was a malicious lie, spread by the doctor's enemies to discredit his greatest invention—this fourth dimensional radio!" "This what?" Johnson blurted out. "And this thing gets broadcasts from the fourth dimension?" "It does, Mr. Johnson! Only charlatans like those who envied Doctor Dean's magnificent accomplishments could deny that fact." lie that broke Dean's spirit and drove him to suicide?" Johnson recoiled. "No—no, of course not But it is a matter of record that the doctor proved the broadcasts emanating from the super-dimension were in English! Why should that be "For three years, Joseph and I lost sleep and hair, trying to detect the simple key that would translate the somewhat metamorphosed broadcasts into our primitive English. It eluded us. Even the doctor

<question>:
What is "La-anago Yergis"?

<options>:
A It's a panacea that can cure any ailment.
B It's medicine. It's a cure for "asteroid fever."
C It's purified water.
D It's a placebo. It's not real medicine.

<answer>:

D