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

<passage>:
almost ordinary-looking. As for the extraterrestrials—it was a free bar—they were merely amused, since to them all men were pathetically and irredeemably hideous. in that time, thanks to the science which could stave off decay, though not death—but with no other apparent physical virtue, for plastic surgery had not fulfilled its bright promise of the twentieth century. clothing the glass shattered at his feet. Now he was not only a rather go to jail because of him." The ugly man gave him a bewildered stare. Then, seeing the forces now ranged against him—including his own belated prudence—were too strong, he stumbled off. He hadn't really wanted to fight, only to smash back, and now it was too late for that. "Is there a good zarquil game in town?" teleview. A very ordinary face. "Look, colleague, why don't you commit referring to an earlier and not amicable conversation they had held, and of which she still bore the reminder on one thickly made-up cheek. Fortunately the car was flying low, contrary to regulations, so that There were no public illuminators this far out—even in town the lights were dimming and not being replaced fast enough nor by the newer models. The town, the civilization, the planet all were old and beginning to slide downhill.... with deliberate insult. He might have saved her life, but only casually, as a by-product of some larger scheme, and her appreciation held little gratitude. driver to take him to the nearest zarquil game. The driver accepted the commission phlegmatically. Perhaps he was more hardened than the others had been perhaps he was unaware that the fat man was not a desperate extended and which was its sole shred of claim to moral justification. 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 many legitimate citizens who weren't quite sure just what the word implied, knowing merely that it was one of those nameless horrors so deliciously hinted at by the fax sheets under the generic term of "crimes against nature." Actually the phrase was more appropriate to zarquil than to most of the other activities to which it was commonly applied. And this was one crime—for it was crime in law as well as 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 slaves. For, on Vinau, bodies were of little account, and so to them zarquil was the equivalent of the terrestrial game musical chairs. Which was why they came to Terra to make profits—there has never been When the zarquil operators were apprehended, which was not frequent—as they had strange powers, which, not being definable, were beyond the law—they suffered their sentences with equanimity. No Earth court could give an effective prison sentence to a creature whose life spanned approximately two thousand terrestrial years. And capital 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 of apparently respectable citizens of a friendly planet. which the zarquil games were usually found, for the Vinzz attempted to conduct their operations with as much unobtrusiveness as was possible. light hinting of squalor rather than forbidden pleasures. That was 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 darkside practices. Naturally the small-town houses were more likely to have trouble in making ends meet, because everybody in the parish knew everybody else far too well. The fat man wondered whether that had been his quarry's motive in coming to such desolate, off-trail places—hoping that eventually The would-be thief fled down the dark alley, with the hot bright rays from the stranger's gun lancing out after him in flamboyant but futile patterns. The stranger, a thin young man with delicate, angular features, made no attempt to follow. Instead, he bent over to examine It almost seems as if he went around looking for trouble, doesn't it?" "It does indeed," the stranger agreed, coughing a little. It was growing colder and, on this world, the cities had no domes to protect them from the climate, because it was Earth and the air was breathable and it wasn't worth the trouble of fixing up. "Then what they say about the zarquil games is true? There are people There was no change of expression on the man's gaunt face, and she wondered how much control he had over a body that, though second- or 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. something about you that doesn't change." "Too bad he got married," the young man said. "I could have followed him for an eternity and he would never have been able to pick me out from the crowd. Too bad he got married anyway," he added, his voice less impersonal, "for your sake." She had come to the same conclusion in her six months of marriage, but I'll get it passed on before then. It'll be expensive—that's all. Bad landing for the guy who gets it, but then it was tough on me too, wasn't it?" "But how did you get into this ... pursuit?" she asked again. "And why are you doing it?" People didn't have any traffic with Gabriel Lockard discoverment and identification simply as an excuse to cover the fact that none of the bodies that fell to his lot ever seemed to fit him? Was he activated solely by revenge or as much by the hope that in the 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 biological impossibility, no one could tell. 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 been undoubtedly some rabid member of the anti-alien groups active on Terra who had started the rumor that the planetary slogan of Vinau was, "Don't beat 'em cheat 'em." "It would have to be something pretty nuclear for the other guy to take "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 match the one he had lost, in his opinion, but there were probably many people who might find this one preferable. No identification in the pockets, but it wasn't necessary the men depicted there. And he knew that this particular man, though not an important criminal in any sense of the word, was one whom the police had been ordered to burn on sight. The abolishing of capital punishment could not abolish the necessity for self-defense, and the man in question was not one who would let himself be captured easily, nor whom the police intended to capture easily. This might be a lucky break for me after all , the new tenant thought, 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 maybe I'll be able to get away with it. once, and from then on, despite all his threats, she had refused to go with him again. But that once had been enough

<question>:
Why was it unheard of to issue an effective prison sentence to the zarquil operators?

<options>:
A The operators were above the law
B The operators were too difficult to contain in a prison
C The operators lived significantly long lives
D The laws were difficult to enforce and harder to uphold

<answer>:

C