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

<passage>:
me an appetite," Kendrick said, rubbing his hands together. "Iximi, you had better start lunch right away. This is the kitchen." Iximi gazed around the cubicle with disfavor. "Truly it is not much," she observed. "However, masters, if you will leave me, I shall endeavor to do my poor best." "Let me show you—" Peter began, but Kendrick interrupted. "Leave the girl alone, Hammond. She must be able to cook, if she's a professional servant. We've wasted the whole morning as it is maybe we been thrust upon him, hundreds of centuries before. He'd accepted the perquisites of divinity with pleasure then. It was some little time had arrived when no ship from Earth was due. So what? The princess looked at him. "Surely Zen the All-Knowing jests?" they have a large out-of-season order for hajench. My hajench going to provide salad bowls for barbarians! When, twenty years previously, the Earthmen had come back to their colony on Uxen after a lapse of thousands of years, Zen had been hopeful that they would take some of the Divine Work off his hands. 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 actually and not, it is contended, just symbolically...." "The stove is here, Almighty," the princess suggested, "not against the door where you are pressing Your Divine Ear." "Shhh. What I hear is fraught with import for the future of the planet. Now every two-bit planet offered hajench in its gift shops. Culturally, though, Uxen had degenerated under the new Earth 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 "A robot is a mechanical man who does all our housework," Hammond, more courteous than his superior, explained. Zen wondered how he could ever teach these Earthlings some manners." His face grew wistful. "Well I remember how my father would have those who crossed him torn apart by wild skwitch." "If you did have the Earthlings torn apart by wild skwitch, Sire," Guj pointed out, "then you would certainly never be able to obtain any information from them." any more these days." No, things were not what they had been since the time the planet had been retrieved by the Earthlings. They had not communicated with Uxen for so many hundreds of years, they had explained, because, after a 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 learned it quickly and forgotten most of their native tongue except for a few untranslatable concepts. really lived up to her title of Most Fair and Exalted, for centuries of selective breeding under which the kings of Uxen had seized the your unworthy daughter what sorrow racks your noble bosom." "Uxen is a backwash," her father mourned. "A planet forgotten, while "Why did you let yourself be conquered?" the princess retorted scornfully. "Ah, had I been old enough to speak then, matters would be not to the Earthlings. After all, he had been there first. " Let "Drat Zen and his days off!" The princess was in a fury. "Very well, you, worthy and undeservedly Honored Parent?" "Those two scientists who arrived from Earth. Didn't you meet them when you came in?" "No, Respected Father," she said, sitting on the arm of the throne. "I The princess sat on the steps of the throne and pondered. "Obviously we must introduce a spy into their household to learn their science and turn it to our advantage." "They are very careful, those Earthlings," Guj informed her superciliously. "It is obvious that they do not intend to let any of us all menial duties. And you, Your Royal Highness, could not plausibly "Nonetheless, it is well worth the attempt," the princess declared. mission for him, but he believed in self-help—especially on Thursdays. "You certainly fixed us up fine!" Hammond muttered disrespectfully to the professor. "You should've told the king we were inventing a vacuum 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. Good old Guj "I can't figure out what's gone wrong," Peter complained, as he 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 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 sought audience with the prime minister. "Welcome, Earthmen, to the humble apartments of His Majesty's most table. "Look, no dust," he whispered. "Must have excellent help here." Zen couldn't help preening just a bit. At least he did his work well "The king said something yesterday about servants being available," as unpleasant as I fancied." Guj stroked his beard. "How do you know the Earthlings will select you , Your Highness? Many other maids will be auctioned off at the The princess stiffened angrily. "They'll pick me or they'll never leave overworked—" plain.... We'll take that one." The professor pointed to the dumpiest and oldest of the women. "How much should I offer to start, Your Excellency? No sense beginning the bidding too high. We Earthmen aren't made of money, in spite of what the rest of the Galaxy seems to think." your maid?" "Communicate? Are they mutes?" "No, but very few of these women speak Earth." A look of surprise 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 peasants gave a loud sniff, which changed to a squeal as she was honored with a pinch from the hand of royalty. "But you will not betray us? We are making rapid advances and before long we hope to make Earth Guj gestured desperately. She tossed her head, but stopped. "Please, Kendrick," Peter begged, "we've got to buy that one!" "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. The others entered the small dwelling. "That little trip certainly gave

<question>:
Why did the princess have trouble completing her duties as a servant?

<options>:
A She did not want to work for the men
B Zen refused to help her
C She did not know how to read
D She had never cooked Earth food before

<answer>:

D