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

<passage>:
Bodyguard Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] When overwhelming danger is constantly present,of course a man is entitled to have a bodyguard. The annoyance was that he had to do it himself ... and his body would not cooperate! humans present were resentful, for he handled himself consciously and to anyone. Even the girl with him was growing restless, for she was almost ordinary-looking. As for the extraterrestrials—it was a free bar—they were merely hastily supplied by the management. And that, coming on top of Gabriel Lockard's spectacular appearance, Suddenly a restraining hand was laid upon his arm. "Don't do that," the not pleased with what they saw. "Watch yourself, colleague," he warned reserving only a sum of money. After setting the locker to respond to bodyguard But to each of these questions the nondescript man shook his head. "Games?" the driver finally asked, although he could guess what was wanted by then. "Dice...? Roulette...? Farjeen?" "Is there a good zarquil game in town?" "I can't contact your attitude," the passenger said with a thin smile. "Bet you've never tried the game yourself. Each time it happens, there's a ... well, there's no experience to match it at a anybody with any legitimate feelings hates 'em." "Of course. You'll need plenty of foliage, though." "I have sufficient funds. I also have a gun." It was a dark and rainy night in early fall. Gabe Lockard was in no condition to drive the helicar. However, he was stubborn. "Let me take the controls, honey," the light-haired girl urged, but he shook his handsome head. at all. Only when she started to struggle out by herself did he seem to a little, but not enough. He sat up. "Guess I'm not hurt or you'd have thrown me back in." "And that's no joke," the fat man agreed. Otherwise, darkness surrounded the three of them. the poor fellow went bankrupt a couple of weeks When he was sure that his charge was safely tucked in for the night, driver to take him to the nearest zarquil game. The driver accepted the one zarquil game to another, loving the thrill of the sport, if you Perhaps—and this was the most likely hypothesis—he just didn't care. Zarquil was extremely illegal, of course—so much so that there were zarquil than to most of the other activities to which it was commonly nature—in which victim had to be considered as guilty as perpetrator otherwise the whole legal structure of society would collapse. Playing the game was fabulously expensive it had to be to make it profitable for the Vinzz to run it. Those odd creatures from Altair's zarquil was the equivalent of the terrestrial game musical chairs. When the zarquil operators were apprehended, which was not frequent—as punishment had become obsolete on Terra, which very possibly saved the terrestrials embarrassment, for it was not certain that their weapons could kill the Vinzz ... or whether, in fact, the Vinzz merely expired after a period of years out of sheer boredom. Fortunately, because trade was more profitable than war, there had always been peace between Vinau and Terra, and, for that reason, Terra could not bar the entrance which the zarquil games were usually found, for the Vinzz attempted to conduct their operations with as much unobtrusiveness as was possible. the trouble in these smaller towns—you ran greater risks of getting involved in games where the players had not been carefully screened. The Vinoz games were usually clean, because that paid off better, but, when profits were lacking, the Vinzz were capable of sliding off into everybody else far too well. heli-driver and entered the zarquil house. "One?" the small green "One," the fat man answered. Gabriel Lockard's form, appropriately outstretched in the gutter. "Only weighted out," he muttered, "he'll be all right. Whatever possessed you two to come out to a place like this?" must them." "Then what they say about the zarquil games is true? There are people who go around changing their bodies like—like hats?" Automatically she reached to adjust the expensive bit of blue synthetic on her moon-pale Why! included in its scope. "Do you want to keep him from recognizing you is that it?" "He won't tell me for a zarquil game. It would be one way of escaping Gabriel, but not, her body was much too good a one to risk so casually. barren solar system, with her unconscious husband and a strange man who them would stay.... him for an eternity and he would never have been able to pick me out risk of getting a bad one?" "This isn't a good body," he said. "It's diseased. Sure, nobody's supposed to play the game who hasn't passed a thorough medical examination. But in the places to which your husband has been leading me, they're often not too particular, as long as the player has plenty of foliage." "How—long will it last you?" except for the slight dampening of the sibilants, "but I'm afraid you cannot play." "Why not?" The emaciated young man began to put on his clothes. "You know why. Your body is worthless. And this is a reputable house." shrugged. "I'll pay you twice the regular fee." The green one shook his head. "Regrettably, I do mean what I say. This game is really clean." "In a town like this?" "That is the reason we can afford to be honest." The Vinzz' tendrils with him. hazards of the game he might, impossible though it now seemed, some day win another body that approached perfection as nearly as his original casing had? The Vinzz had been locking antennae with another of his kind. Now they detached, and the first approached the man once more. "There is, as it happens, a body available for a private game," he lisped. "No questions to be asked or answered. All I can tell you is that it is in good health." The man hesitated. "But unable to pass the screening?" he murmured aloud. "A criminal then." "Of course," the Vinzz said primly. His kind did have certain ultimate standards to which they adhered rigidly, and one of those was the curious tabu against mixed games, strictly enforced even though it kept them from tapping a vast source of potential players. There had been proved that an alien life-form had "desecrated" a human body, Earthmen would clamor for war ... for on this planet humanity held its self-bestowed purity of birthright dear—and the Vinzz, despite being unquestionably the stronger, were pragmatic pacifists. It had "Don't beat 'em cheat 'em." "It would have to be something pretty nuclear for the other guy to take such a risk." The man rubbed his chin thoughtfully. "How much?" "Thirty thousand credits." "Why, that's three times the usual rate!" "The other will pay five times the usual rate." "Oh, all right," the delicate young man gave in. It was a terrific risk he was agreeing to take, because, if the other was a criminal, he police had been ordered to burn on sight. The abolishing of capital punishment could not abolish the necessity for self-defense, and the rude health, was not a very comfortable fit. I can do a lot with a hulk like this. And maybe I'm cleverer than the original owner I'll be able to get away with it. IV whatever I want to know. But why else should he guard somebody he obviously hates the way he hates you? Only because he doesn't want to Gabe, why don't you...?" once, and from then on, despite all his threats, she had refused to go "Oh, yes, I can," she said incautiously. "You must have had a body to match your character. Pity you could only change one."

<question>:
Why must only the healthy play zarquil?

<options>:
A Only healthy bodies can be accepted in the games.
B The games are dangerous and only those in the best health can survive.
C Health is a form of wealth in the game of zarquil.
D There are no health restrictions on the game.

<answer>:

A