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

<passage>:
[Transcriber's Note: This etext was produced from Galaxy Science Fiction June 1955. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] been thrust upon him, hundreds of centuries before. He'd accepted the perquisites of divinity with pleasure then. It was some little time before he discovered its drawbacks, and by then it was too late that one, stretching out an impalpable tendril of curiosity, brought back to his total consciousness the news that a spaceship from Earth had arrived when no ship from Earth was due. When, twenty years previously, the Earthmen had come back to their colony on Uxen after a lapse of thousands of years, Zen had been After all, since it was they who had originally established the colony, it should be their responsibility. But it seemed that all humans, not merely the Uxenach, were irresponsible. The Earthmen were interested only in trade and tribute. They even refused to believe in the existence of Zen, an attitude which he found extremely irritating found wide acceptance throughout the Galaxy, particularly the low bowls which had hitherto been used only for burning incense before Zen the Formidable. Now every two-bit planet offered hajench in its gift shops. Culturally, though, Uxen had degenerated under the new Earth "Shhh. What I hear is fraught with import for the future of the planet. lost its interest when new laws prohibited the ancient custom of executing the losing side after each game. There was no tourist trade, for the planet was too far from the rest Moolai Uxen." administration. No more criminals were thrown to the skwitch. Xwoosh planet arrived at rare intervals for fueling or repairs, but the crew never had anything to do with the Uxenach. Local ordinance forbade the audience chamber where the two strange Earthmen who had come on the And crossing his wrists in the secular xa, he led the way to where Uxlu "Welcome, Earthlings, to Uxen," King Uxlu said in the sonorous tones of perhaps scientists?" "Yes, Your Majesty." Every one of Zen's perceptors quivered expectantly. Earth science was banned on Uxen, with the result that its acquisition had become the golden dream of every Uxena, including, of course, their god. The older scientist gave a stiff bow. "I am an anthropologist. My wished he could join them, but he couldn't materialize on that plane Immaterial Omnipresence was a part of the accepted dogma, but there is a big difference between accepting a concept on a basis of faith or of proven fact. "that require both physics and anthropology." "Our researches are rather limited in scope," Kendrick assured him. "We "We've brought along our own collapsible laboratory-dwelling," Kendrick "He's Uxen's own particular, personal and private god, exclusive to our "An investigation of the prevalent nuclear ritual beliefs on Uxen in pointed out, "then you would certainly never be able to obtain any information from them." been retrieved by the Earthlings. They had not communicated with Uxen for so many hundreds of years, they had explained, because, after a more than ordinarily disastrous war, they had lost the secret of space travel for centuries. Now, wanting to make amends for those long years of neglect, they immediately provided that the Earth language and the Earth income tax become mandatory upon Uxen. The language was taught by recordings. Since the Uxenach were a highly intelligent people, they had all "Must be a new secret atomic weapon they're working on," Uxlu decided. "Why else should they come to such a remote corner of the Galaxy? And nuclear beliefs. If only we could discover what it is, secure it for ourselves, perhaps we could defeat the Earthmen, drive them away—" he sighed for the third time that morning—"and rule the planet ourselves." of selective breeding under which the kings of Uxen had seized the loveliest women of the planet for their wives had resulted in an "Uxen is a backwash," her father mourned. "A planet forgotten, while was more or less in sympathy, since he felt Uxen belonged to him and "Those two scientists who arrived from Earth. Didn't you meet them working on a secret weapon. If we had it, we could free Uxen." of the spaceship in one of the Royal Parks. A vast crowd of Uxenach these closed groups are so apt to resent any investigation into their mythos." "If it's all mythical, why do you need a scientist then?" "A physical scientist, you mean," Kendrick said austerely. "For anthropology is a science, too, you know." Peter snorted. "Some Earthmen claim actually to have seen these alleged manifestations," Kendrick went on to explain, "in which case there must be some kind of mechanical trickery involved—which is where you come in. Of course I would have preferred an engineer to help me, but you were all I could get from the government." "And you wouldn't have got me either, if the Minister of Science didn't have it in for me!" Peter said irately. "I'm far too good for this places—" "Better watch out," the professor warned, "or the Minister might decide you're too good for science altogether, and you'll be switched to a position more in keeping with your talents—say, as a Refuse Removal Agent." And what is wrong with the honored art of Refuse Removal? Zen wondered. There were a lot of mystifying things about these Earthmen. The scientists' quaint little edifice was finally set up, and the spaceship took its departure. It was only then that the Earthmen discovered that something they called cigarettes couldn't be found in the welter of packages, and that the robot wouldn't cook dinner or, in fact, do anything. to be all right, and yet the damned thing won't function." "Looks as if we'll have to do the housework ourselves, confound it!" "Uh-uh," Peter said. "You can, but not me. The Earth government put me under your orders so far as this project is concerned, sir, but I'm not supposed to do anything degrading, sir, and menial work is classified as just that, sir, so—" themselves." "How disgusting that there should still be a planet so backward that way back to his physical being. It had never occurred to him that the functions of gods on other planets might be different than on Uxen ... unless the Earthlings failed to pay reverence to their own gods, which seemed unlikely in view of the respectful way with which Professor Kendrick had greeted the mention of Zen's Awe-Inspiring Name. Then Refuse Removal was not necessarily a divine prerogative. "All right," Kendrick agreed gloomily. "We'll try one of the natives." the Earthmen—in spirit, that was—on their excursion in search of a see," he whispered to his assistant, "a clear case of magico-religious culture-freezing, resulting in a static society unable to advance Kendrick glared at him. "Please remember that I'm the anthropologist," "We don't have Zen teleport animate objects," the prime minister explained affably. "Or even inanimate ones if they are fragile. For He tends to lose His Temper sometimes when He feels that He is flitted over the faces of the servants, vanishing as her royal highness glared at them. Kendrick pursed thin lips. "I was under the impression that the Earth language was mandatory on Uxen." "Oh, it is "Certainly not. You can see she's a troublemaker. Do you speak Earth?" the professor demanded of the maid he had chosen. "No speak," she replied. Peter tugged at his superior's sleeve. "That one speaks Earth." Kendrick shook him off. "Do you speak Earth?" he demanded of the second oldest and ugliest. She shook her head. The others went through the same procedure.

<question>:
Why did the physicist and anthropologist travel to Uxen?

<options>:
A Because they needed a quiet place for research
B Because they wanted to study Zen
C Because they wanted to work on nuclear warfare research
D Because science was banned on Earth

<answer>:

B