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

<passage>:
The cell had been put together more efficiently than any Korvin had Tr'en were an efficient people. All the preliminary reports had agreed on that their efficiency, as a matter of fact, was what had made Korvin's arrival a necessity. They were well into the atomic era, and settling the other planets of their system, and then the nearer stars. Faster-than-light travel couldn't be far away, for the magnificently efficient physical scientists of the Tr'en—and that would mean, in the ordinary course of events, an invitation to join the Comity of Planets. An invitation, the Comity was sure, which the Tr'en would not accept. Korvin stretched out on the cell's single bunk, a rigid affair which magic, several miles away near the slightly-damaged hulk of his ship, to the wonder and amazement of his Tr'en captors. He could do, as a matter of fact, precisely nothing. He wished quietly that the Tr'en had seen fit to give him a pack of cards, or a book, or even a folder of tourist pictures. The Wonders of Tr'en, according to all the advance reports, were likely to be pretty boring, but they'd have been better than nothing. In any decently-run jail, he told himself with indignation, there would at least have been other prisoners to talk to. But on Tr'en Korvin was all alone. discuss almost anything from philosophy to plumbing, but there was nobody to discuss it with. He changed position on the bunk and stared at the walls. The Tr'en were efficient there weren't even any imperfections in the smooth surface to distract him. As he reached this dismal conclusion, the cell door opened. Korvin got up off the bunk in a hurry and spun around to face his visitor. The Tr'en was tall, and slightly green. He looked, as all the Tr'en did, vaguely humanoid—that is, if you Korvin didn't really didn't care about it it was none of his business. The Tr'en regarded him narrowly through catlike pupils. "You are Korvin," he said. It was a ritual, Korvin had learned. "You are of the Tr'en," he slightly—but no more than slightly—and came into the cell, closing the door behind him. Korvin thought of jumping the Tr'en, but decided quickly against it. He was a captive, and it was unwise to assume that his captors had no more resources than the ones he saw: a small translucent pistollike affair in a holster at the Tr'en's side, and a "What do you want with me?" Korvin said. The Tr'en speech—apparently there was only one language on the planet—was stiff and slightly awkward, but easily enough learned under drug hypnosis most rigorously logical construction of its kind Korvin had ever come Korvin sighed. "What are you doing here, then?" he asked. As to get the hang of, Korvin told himself bitterly. He thought for a It wasn't quite "talk" that was a general word in the Tr'en language, Korvin shrugged, sighed and smoothed back his hair. "I obey the try. But Korvin meant exactly what he'd said. He was going to obey the commands of the Ruler of the Tr'en—and remove the Tr'en threat from the rest of the galaxy forever. That, after all, was his job. Korvin decided, much too much of a bad idea, even when the color contrast of the Tr'en themselves were figured in. The Ruler himself, a Tr'en over seven feet tall and correspondingly Korvin wasn't attempting to escape. He wasn't pleading with the Ruler. He wasn't defying the Ruler, either. He was just answering questions. The Tr'en liked to have everything clear. They were a logical race. The Ruler had started with Korvin's race, his name, his sex—if any—and whether or not his appearance were normal for humanity. under four feet." He used the Tr'en measurement scale, of course it Korvin nodded hurriedly. "Our race is more ... more approximate," he Korvin looked around and saw it coming through the door, pushed by two necessarily made up any lie-detector machinery was almost a miracle. The Tr'en, under other circumstances, would have been a valuable addition to the Comity of Nations. Being what they were, though, they could only be a menace. And Korvin's appreciation of the size of that menace was growing hourly. continue." Korvin swallowed again. The test hadn't really seemed extensive enough to him. But, after all, the Tr'en knew their business, better than anyone else could know it. They had the technique and the logic and the training. The Ruler was frowning at him. Korvin did his best to look receptive. Korvin looked sober. "Yes," he said. Korvin decided to throw his first spoke into the wheel. "Staying Korvin shrugged. "I replied to your question," he said. "I did not Ruler," he said at last, in an approximation of his usual one. "But the Ruler will not be confused. We have experts in matters of logic"—the Tr'en word seemed to mean right-saying Korvin's guards were standing around doing nothing of importance now The Ruler looked down at Korvin. "You will find that you cannot trick Korvin Korvin devoutly hoped so. The experts in logic arrived shortly, and in no uncertain terms Korvin the secretary of the club whose members were secretaries, Achilles and the tortoise, and all the other lovely paradox-models scattered around were so much primer material for the Tr'en. "They can be treated mathematically," one of the experts, a small emerald-green being, told Korvin thinly. "Of course, you would not understand the mathematics. The expert frowned horribly, showing all of his teeth. Korvin did his Korvin was very glad that wasn't a question. It was, after all, the the experts were clustered around the single chair. Korvin was "Sometimes," Korvin said. "It has other names?" the Ruler said. "It has no name," Korvin said truthfully. The Tr'en idiom was like the Korvin nearly smiled. "Both," he said. The key question had, at last, been asked. Korvin felt grateful that the logical Tr'en had determined to begin from the beginning, instead of going off after details of armament first Korvin shrugged. "The explanation cannot be given to you." "I will not," Korvin said. It was the signal for another conference. With some satisfaction, Korvin noticed that the Tr'en were becoming slightly puzzled they Korvin shook his head earnestly. "I am attempting," he said, "not to Korvin tried to look grateful. "Well, then," he said, "what is your from a knot of Tr'en, inclined his head in Korvin's direction, and obey. In this way uniformity is gained, and this uniformity aids in the speed of possible action and in the weight of action. All Tr'en Korvin shook his head. "If you insist," he said, "I'll try it. But you Korvin nodded. "Yes." Korvin shrugged. "Not knowingly," he said. The Ruler flashed a look at "We have no need of one," Korvin said calmly. Korvin wondered, as the technicians argued, how long they'd take Korvin found himself the object of more attention than he had hoped On the third day Korvin escaped. problem was insoluble. And the Tr'en weren't capable of that sort of thinking. Korvin thanked his lucky stars that their genius had been restricted particular plan. That, and the political structure of the Tr'en. The same lack of insight let the Tr'en subconscious work on his escape without any annoying distractions in the way of deep quite intent, Korvin was sure. Getting to the ship was a little more messages, but he could send them. He sent one now. Mission accomplished the Tr'en aren't about to come marauding out into space too soon. They've been given food for thought—nice indigestible food that's going to stick in their craws until they finally manage to digest it. But they

<question>:
What was Korvin's plan?

<options>:
A Lie to the Tr'en
B Help the Tr'en understand democracy
C Confuse the Tr'en
D Get the Tr'en to chase him

<answer>:

C