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

<passage>:
Manet thumbed through the manual in mechanical frustration. As he did Manet just didn't know when to stop! William Manet was alone. In the beginning, he had seen many advantages to being alone. It would give him an unprecedented opportunity to once and for all correlate loneliness to the point of madness, to see how long it would take him under his fingers.... Manet gave one final spurt from the flesh-sprayer and stood back. "Move!" Victor leaped back into the Lifo kit and did a jig on one of the flesh-sprayers. As the device twisted as handily as good intentions, Manet realized that it was not a flesh-sprayer but the Modifier. "It's finished!" were Victor's first words. "It's done!" "They all say that." Manet was Atmosphere Seeder Station 131-47's own human. All Manet had to do was sit in the beating aluminum heart in the middle "No?" "No. You have made yourself an enemy." at the symmetry of the situation. "It completes the final course in socialization," Victor continued. "I am your adversary. I will do everything I can to defeat you. I have all "I am not your friend." Manet felt nothing more at this information than an esthetic pleasure do not have all your knowledge. If you let yourself know some of the things, it could be used against you. It is my function to use everything I possibly can against you." "When do you start?" isolate themselves in a useless job. They got, instead, William Manet "What's so bad about that?" Manet asked with some interest. and his fellows. "I've finished. I've done my worst. I have destroyed the Modifier." Manet suspected hallucination, but in an existence with all the pallid Sometimes he even manufactured it. Sometimes he would run through the arteries of the factory and play that it had suddenly gone mad hating human beings, and was about to close down its bulkheads on him as sure as the Engineers' Thumb and bale up the pressure-dehydrated digest, making so much stall flooring of him. He ran until he dropped with a kind of climaxing release of terror. So Manet put on the pressure suit he had been given because he would "No. Can't do it, old man. Can't. I know. You're too human, too like me. The one thing a man can't accept is a passive state, a state of uselessness. Not if he can possibly avoid it. Something has to be happening to him. He has to be happening to something. You didn't kill me because then you would have nothing left to do. You'll never kill me." "Of course not!" Victor stormed. "Fundamental safety cut-off!" "Rationalization. You don't want to kill me. And you can't stop challenging me at every turn. That's your function." "Stop talking and just think about your miserable life," Victor said "That's what I'm trying to tell you," Manet said irritably, his social Manet gave in to it. "I want to be not alone," he said. Manet handed back the pen and stared at the laminated card in his hand. Manet didn't open the box. He let it fade quietly in the filtered but Finally, Manet woke up one morning. He lay in the sheets of his bunk, suppressing the urge to go wash his hands, and came at last to the conclusion that, after all the delay, he was mad. So he went to open the box. . Manet tried to flip past this First find the Modifier The Black King pounced forward one space. The Red King advanced backwards to face the enemy. The Black King shuffled sideways. The Red King followed.... Uselessly. "Tie game," Ronald said. "Tie game," Manet said. Intelligence was one of the factors Manet had punched to suppress. Manet knew it all. He had heard it all before. first learned of them, and he had learned all about them. He had firm opinions on all these. He yearned for someone to challenge him—to say that Manet's only consolidation was that Ronald's tastes were lower than his The two men separated and, puffing like steam locomotives passing the diesel works, closed again. Ronald leaped forward and led with his right. Manet stepped inside the swing and lifted an uppercut to the ledge of "Had enough?" he asked Manet. Manet dropped his fists to his sides and turned away. "Yes." Manet scrunched up inside himself in impotent fury. Ronald was maddeningly co-operative and peaceful. He would even get in a fist fight to avoid trouble between them. He would do anything Manet wanted him to do. He was so utterly damned stupid. Manet's eyes orbitted towards the checkerboard. But if he were so much more stupid than he, Manet, why was it that Manet lay stretched out on his back, naked, in front of the transparent " As he passed the File Room, he caught the sound of the pounding vibrations against the stoppered plug of the hatch. "Come on, Billy Buddy, let me out of this place!" Manet padded on down the hall. He had, he recalled, shoved Ronald in there on Lincoln's Birthday, a minor ironic twist he appreciated quietly. He had been waiting in vain for Ronald to run down ever since. In Communication, he took a seat and punched the slowed down playback of the transmission. It irritated Manet. He never understood how the British had got the Finally, Manet went back to the solarium and dragged the big box out. of them, he now knew, was the Modifier. The Modifier was what he needed to change Ronald. Or to shut him off. Manet selected the ripple-finished gray-covered manual from the Veronica crept up behind Manet and slithered her hands up his back and over his shoulders. She leaned forward and breathed a moist warmth into his ear, and worried the lobe with her even white teeth. "Daniel Boone," she sighed huskily, "only killed three Indians in his life." "I know." Manet folded his arms stoically and added: "Please don't talk." Manet elbowed Veronica away in a gentlemanly fashion. She made her return. "Not now," he instructed her. "Don't be silly," Veronica said. "Who else would stop those vile North Koreans and Red China 'volunteers'?" even before the last of the jet pilots." "Don't be silly," she snapped. "If it were over, I'd know about it, wouldn't I?" less equipped with Manet's own store of information, than Ronald. He stepped forward and back-handed her across the jaw. It was the first time he had ever struck a woman, he realized regretfully. He now knew he should have been doing it long ago. Ronald's cries grew louder as Manet marched Veronica through the corridor. "Hear that?" he inquired, smiling with clenched teeth. "Come on, Bill, open up the hatch for old Ronald," the voice carried through sepulchrally. "Shut up!" Manet yelled. The voice dwindled stubbornly, then cut off. Manet threw back the bolt and wheeled back the hatch. Ronald didn't say anything to Manet. "inside, inside." Ronald sidestepped the lurching girl. "Do you know what I'm going to do with you?" Manet demanded. "I'm going to lock you up in here, and leave you for a day, a month, a year, forever! Now what do you think about that?" Manet slammed the hatch in disgust. Manet walked carefully down the corridor, watching streamers of carefully, else the artery would roll up tight and squash him. But he walked too carefully for this to happen. As he passed the File Room, Ronald's voice said: "In my opinion, William, you should let us out." diligently, Manet concluded that there weren't enough parts left in the

<question>:
Why did Manet lock the two people in the small room?

<options>:
A They were unintelligent.
B He had gone crazy.
C They would not do as he said.
D They tried to kill him.

<answer>:

A