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

<passage>:
Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Naturally they did not get results at once, nor did they expect to it required a fine adjustment. But they were disappointed that they found had refused to read Positive when turned on the inventor himself, bad blood developed between machine and man. Glaser knew that he had extraordinary perception. He was a much honored man in his field. He he had only ordinary perception to an extraordinary degree. There is a difference , the machine insisted. assumed an air of importance when it ran these tests. Finally it signaled the result, the most exasperating result it ever from the thoughtful creature?" "No. The rest of the world may be dangerous. There must be a reason that thought is in one spot only. If we find no others then we will go down boldly and visit this." but the woman smiled, proving that she was human. "The woman is named Hawwah," said the man. "The sheep is named sheep, the lion is named lion, the horse is named horse and the hoolock is named hoolock." "I understand. It is possible that this could go on and on. How is it "Ha-Adamah, what do you think that we are? Are we not people?" "You are not anything till I name you. But I will name you and then you can be. You are named Captain. He is named Priest. He is named Engineer. He is named Flunky." "But are we not people?" persisted Captain Stark. "No. We are the people. There are no people but two. How could there be other people?" "And the damnest thing about it," muttered Langweilig, "is, how are you going to prove him wrong? But it does give you a small feeling." "Pick from the trees," said Ha-Adamah, "and then it may be that you will want to sleep on the grass. Being not of human nature (which does animals. The lion and lioness were enough to make one cautious, though they offered no harm. The two bears had a puzzling look, as though they wanted either to frolic with you or to mangle you. "If there are only two people here," said Casper Craig, "then it may be haven't yet tried the—" and he stopped. "If you're thinking what I'm afraid to think," said Gilbert, "then it will be the test at least: whether we're having a pleasant dream or "I won't be the first to eat one. You eat." "Ask him first. You ask him." "Ha-Adamah, is it allowed to eat the apples?" "Well, the analogy breaks down there," said Stark. "I was almost beginning to believe in the thing. But if it isn't that, then what. "I was never a believer. But would it be possible for the exact same proposition to maintain here as on Earth?" And it was then that Ha-Adamah, the shining man, gave a wild cry: "No, no. Do not approach it. It is not allowed to eat of that one!" "I thought so. Question the man further, Father. This is too incredible." "It is a little odd. Adam, old man, how long have you been here?" "I do not understand what 'older' is. I am as I have been from the beginning." "And do you think that you will ever die?" "To die I do not understand. I am taught that it is a property of fallen nature to die, and that does not pertain to me or mine." "Perfectly happy according to my preternatural state. But I am taught that it might be possible to lose that happiness, and then to seek it vainly through all the ages. I am taught that sickness and ageing and even death could come if this happiness were ever lost. I am taught that on at least one other unfortunate world it has actually been lost." "Do you consider yourself a knowledgeable man?" Then Stark cut in once more: "There must be some one question you could ask him, Father. Some way to settle it. I am becoming nearly convinced." "Yes, there is a question that will settle it. Adam, old man, how about a game of checkers?" "I'm not clowning, Captain. How about it, Adam? I'll give you choice of colors and first move." "No. It would be no contest. I have a preternatural intellect." never played a preternatural mind. Let's just set up the board, Adam, and have a go at it." "What is there, Adam?" asked Captain Stark. "The great serpent lives there. I would not disturb him. He has long been cranky because plans he had for us did not materialize. But we are taught that should ever evil come to us, which it cannot if we persevere, it will come by him." They learned no more of the real nature of the sphere in their time there. Yet all but one of them were convinced of the reality when they left. And they talked of it as they took off. "A crowd would laugh if told of it," said Stark, "but not many would laugh if they had actually seen the place, or them. I am not a gullible man, but I am convinced of this: that this is a pristine and pure world and that ours and all the others we have visited are fallen worlds. are garbed in light and innocence, and they have the happiness that we have been seeking for centuries. It would be a crime if anyone disturbed that happiness." "I too am convinced," said Steiner. "It is Paradise itself, where the lion lies down with the lamb, and where the serpent has not prevailed. It would be the darkest of crimes if we or others should play the part of the serpent, and intrude and spoil." "I am probably the most skeptical man in the world," said Casper Craig the tycoon, "but I do believe my eyes. I have been there and seen it. names were "Snake-Oil Sam," spoke to his underlings: "It'll take them fourteen days to get back with the settlers. We'll "I think you'd better write me some new lines," said Adam. "I feel like a goof saying those same ones to each bunch." change Adam and Eve to Ha-Adamah and Hawwah, and the apple to the pomegranate. People aren't becoming any smarter—but they are becoming better researched, and they insist on authenticity. "This is still a perfect come-on here. There is something in human nature that cannot resist the idea of a Perfect Paradise. Folks will whoop and holler to their neighbors to come in droves to spoil and mar it. It isn't greed or the desire for new land so much—though that is strong too. Mainly it is the feverish passion to befoul and poison what is unspoiled. Fortunately I am sagacious enough to take advantage of the rather large pile of bone-meal in one corner. "We will have to have another lion," said Eve. "Bowser is getting old, and Marie-Yvette abuses him and gnaws his toes. And we do have to have a big-maned lion to lie down with the lamb." "I know it, Eve. The lion is a very important prop. Maybe one of the crackpot settlers will bring a new lion." Briton. "Why in cosmos would we want an armed escort?" "It's as phony as a seven-credit note!" "You, a man of the cloth doubt it? And us ready skeptics convinced by our senses? Why do you doubt?" "It is only the unbelieving who believe so easily in obvious frauds. Theologically unsound, dramaturgically weak, philologically impossible, zoologically rigged, salted conspicuously with gold and shot through with anachronisms. And moreover he was afraid to play me at checkers." "What?" "If I have a preternatural intellect I wouldn't be afraid of a game of checkers with anyone. Yet there was an unusual mind there somewhere it

<question>:
Why does Adam refuse to play checkers?

<options>:
A He does not want to humiliate the priest by beating him.
B The priest is too eager to go up against him, and he doesn't want to disappoint.
C He has no reason to play. He is omniscient and would win without contest.
D He is scared of losing and giving away his true identity.

<answer>:

D