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

<passage>:
Tr'en were an efficient people. All the preliminary reports had agreed to the wonder and amazement of his Tr'en captors. even a folder of tourist pictures. The Wonders of Tr'en, according to The Tr'en was tall, and slightly green. from, by peaceful and vocal means." Korvin filed it away for future reference. "Why did the Ruler not come to me?" Korvin asked. "The Ruler is the Ruler," Didyak said, slightly discomfited. "You are to go to him. Such is his command." Korvin shrugged, sighed and smoothed back his hair. "I obey the command of the Ruler," he said—another ritual. Everybody obeyed the command of the Ruler. If you didn't, you never had a second chance to 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. The Room of the Ruler was large, square and excessively brown. The walls were dark-brown, the furnishings—a single great chair, several 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 broad, sat in the great chair, his four fingers tapping gently on the table near him, staring at Korvin and his guards. The guards stood on 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. ," he volunteered helpfully. "Approximately?" the Ruler growled. "We ask for precision here," he said. "We are scientific men. We are exact." for you." "You will answer my questions," the Ruler said, "with exactitude." He match their enormous command of the physical universe adapting a The Tr'en, under other circumstances, would have been a valuable "I am not," he said. The Ruler looked to his technicians for a signal, and nodded on the training. He hoped they were right. The Ruler was frowning at him. Korvin did his best to look receptive. The Ruler roared. "Do not waste time with the obvious!" he shouted. "Do not try to trick us we are a logical and scientific race! Answer correctly." "I have told the truth," Korvin said. know that there was more than one kind of truth. Surely the truth is the truth, just as the Ruler is the Ruler?" "I—" The Ruler stopped himself in mid-roar. "You try to confuse the 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 that their captor was strapped down in the lie-detector. The Ruler gestured and they went out the door in a hurry. The Ruler looked down at Korvin. "You will find that you cannot trick us," he said. "You will find that such fiddling"— chulad-like "It has no name," Korvin said truthfully. The Tr'en idiom was like the decisions, leaving only the more extensive ones for the master. This seems to us inefficient and liable to error, yet it is a possible system. Is it the system you mean?" Very sharp, Korvin told himself grimly. "It is," he said. "Then the government which reigns over several planets is supreme," the Ruler said. "It is," Korvin said. "Who is it that governs?" the Ruler 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 "Any question of fact has an answer," the Ruler snapped. "A paradox is not involved here a government exists, and some being is the are governed, you have said," the Ruler went on. "True," Korvin said. "Then there is a governor for this system," the Ruler said. "True," Korvin said again. The ruler sighed gently. "Explain this governor to us," he said. Korvin shrugged. "The explanation cannot be given to you." The plan was taking hold. The Ruler had finished his conference. "You are attempting again to confuse us," he said. confuse you." "Then I ask for an answer," the Ruler said. The Ruler hesitated, then nodded. "Ask it," he said. "We shall answer it if we see fit to do so." from a knot of Tr'en, inclined his head in Korvin's direction, and began. "Our government is the only logical form of government," he said in a high, sweet tenor. "The Ruler orders all, and his subjects 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 act instantly in the same manner. The Ruler is adopted by the previous Ruler in this way we are assured of a common wisdom and a steady judgment." "You have heard our government defined," the Ruler said. "Now, you will define yours for us." Korvin shook his head. "If you insist," he said, "I'll try it. But you won't understand it." The Ruler frowned. "We shall understand," he said. "Begin. Who governs you?" "But you are governed?" Korvin nodded. "Yes." "Then there is a governor," the Ruler insisted. "True," Korvin said. "But everyone is the governor." "Then there is no government," the Ruler said. "There is no single decision." "No," Korvin said equably, "there are many decisions binding on all." "Who makes them binding?" the Ruler asked. "Who forces you to accept these decisions? Some of them must be unfavorable to some beings?" "Many of them are unfavorable," Korvin said. "But we are not forced to wasn't making any sense. "I told you you wouldn't understand it," he said. "It is a defect in your explanation," the Ruler almost snarled. "My explanation is as exact as it can be," he said. The Ruler breathed gustily. "Let us try something else," he said. "Everyone is the governor. Do you share a single mind? A racial mind has been theorized, though we have met with no examples—" "Neither have we," Korvin said. "We are all individuals, like yourselves." "But with no single ruler to form policy, to make decisions—" "We have no need of one," Korvin said calmly. democracy ," Korvin said. "It means the rule of the people. There is no need for another ruler." One of the experts piped up suddenly. "The beings themselves rule each other?" he said. "This is clearly impossible for, no one being can have the force to compel acceptance of his commands. Without his force, there can be no effective rule." "That is our form of government," Korvin said. insoluble. And the Tr'en weren't capable of that sort of particular plan. That, and the political structure of the Tr'en. The same lack of insight let the Tr'en subconscious work on his the Tr'en aren't about to come can't digest it and stay what they are you've got to be democratic, to some extent, to understand the idea. What keeps us obeying laws we ourselves make? What keeps us obeying laws that make things inconvenient for us? Sheer

<question>:
Why does the Tr'en's logic fail them?

<options>:
A Because the lie-detector was faulty and Korvin gave them an insoluble paradox.
B Because it's too mathematical and doesn't account for motivations, emotions, and what's left unsaid.
C Because Korvin switched the wires on the lie-detector and gave the Tr'en an insoluble paradox.
D Because it's tightly controlled by the Ruler who is quite simple minded.

<answer>:

B