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

<passage>:
that could bother me worse. Coleman came in the morning before I was really ready to face the day. My nerves were fairly well shot from the kind of work I did as masochistic mystics, I had to face one of my superiors from the Committee itself. Councilman Coleman was an impressive figure in a tailored black tunic. His olive features were set off by bristling black eyes and a mobile the first master criminal of the paratime universe, and Horbit was no "Warden Walker, I've been following your career with considerable I didn't know whether to be flattered or apprehensive. "That's fine," I justified they might think it was. "Hey, Warden," Captain Keller bellowed as I approached my office door, "when are you going to let me throw that stiff Coleman into the sleepy-bye vaults? He's still sitting in there on your furniture as smug as you please." said. It didn't sound right. "Tell me," Coleman said, crossing his legs, "what do you think of both incapable of ending their little game by homicide, no matter how Now was the time. I stretched out my wet palm toward the door. Was or was not Coleman telling the truth when he said this life of mine "I should think so," Coleman said emphatically. "Warden, don't you I changed my decision then, in that moment. And, in the next, changed it back to my original choice. "Coleman," I said, "you can get out of here. As warden, I'm granting of yellow light. "I don't approve of your decision, Warden. Not at they know they have relatives and friends outside the dream. They know, unless—" Coleman lifted a dark eyebrow above a black iris. "Unless?" "Tell me, Councilman, what happened to the offer to release me from "How do prisoners like that adjust to reality?" schizoid and pretend to go along with reality while secretly 'knowing' it to be a lie." Coleman removed a pocket secretary and broke it open. "About these new "Yes, sir," I replied. "By letting the prisoner project his own because of your high position, but at the same time you didn't want too long a sentence. But I'm doing you no favors. You get no time from me, Coleman." "How did you decide to do this?" he asked. "Don't tell me you never Hadn't I thought about it ever since I had been appointed warden and doubted. We've all doubted since we found out about the machines: which Coleman stood up and walked out of my office. The clock told me it was after five. I began clearing my desk. Captain Keller stuck his head in, unannounced. "Hey, Warden, there's an I put away my pills. Solving simple problems such as the new visitor would employ such a jagged broadsword for prying in his bureaucratic a prisoner what the modern penal system was all about by giving him a prisoners might be a more effective form of investigation than mere be released from my Dream, he had said smugly. "But Warden, sir, my psychiatrist said that I was unable to cope with reality. Come on now, Warden, you don't want a guy who can't cope with His eyes narrowed, both of them, on the next twitch. "Warden, I can Horbit laughed. "Your files aren't infallible, Warden." "I'm going to make you go down to the vaults and put me back to sleep, Warden." the game with uncompromising logic, trusting that even madness had hard What was I going to do? I picked up the gun from where he had dropped it and handed it to Captain Keller, my head guard, a tough old bird who wore his uniform like armor. "Trying to force his way back to the sleep tanks," I told Keller. to stand the strain of putting their fellow human beings to sleep for long. One of Keller's men had stabbed Horbit's arm with a hypospray to blanket the pain from his broken wrist, and the man was quieter. "I couldn't have done it, Warden," Horbit mumbled drowsily. "I couldn't disarming a dedicated maniac. With only an hour to spare for gym a day, "You have to send me back now, Warden," he was shrilling. "You have to! know that's a crime! I have to be put to sleep!" Keller flicked his mustache with a thick thumbnail. "How about that? You won't let a guy back into the sleepy-bye pads, so he pulls a gun on you to make you, and Warden. No, sir, he had it made." My answer to Keller was forming, building up in my jaw muscles, but I took a pill and it went away. "Hold him in the detention quarters," I said finally. "I'm going to make a study of this." Keller winked knowingly and sauntered out of the office, his left hand swinging the blackjack the Committee had taken away from him a decade before. The problem of what to do with Keller wasn't particularly atypical of the ones I had to solve daily and I wasn't going to let that worry me. Much. "Warden," Paulson said, "I've decided to give myself up. I murdered a conscience, Warden. I never lie awake a minute whenever I kill a homicidal maniac who is offering to go back to the vaults of his own guilt with another crime. Do you want a crime on your hands, Warden?" I was ready for the afternoon session. Matrons were finishing the messy job of dragging a hysterical woman out of the office when Keller came back. He had a stubborn look on his flattened, red face. "New prisoner asking to see you personal," Keller reported. "Told him no. Okay?" "Naw, he ain't violent, Warden. He just thinks he's somebody important." "Mm-hmm. And who is he really, Captain?" "Councilman Coleman." I whistled. "What did they nail him on?" "Misuse of authority." re-established through the day. I hadn't had a chance to brood much over the bombshell Coleman had tossed in my lap in the morning, but now I could think. Coleman entered wearing the same black tunic, the same superior attitude. His black eyes fastened on me. "Sit down, Councilman," I directed. He deigned to comply. I studied the files flashed before me. Several times before, Coleman had been guilty of slight misuses of his authority: helping his Coleman had first received a suspended sentence, then two terminal sentences to be fixed by the warden. My predecessors had given him first a few weeks, then a few months of sleep in Dreamland. Coleman's eyes didn't frighten me I focused right on the pupils. "That was a pretty foul trick, Councilman. Did you hope to somehow frighten me out of executing this sentence by what you told me this morning?" only a Dream such as I imposed on my own prisoners could help him, I "Warden Walker," Coleman intoned in his magnificent voice, "I'm pardon him despite the misguided rulings of the courts. Then I thought of something else. "You show symptoms of being a habitual criminal, Coleman. I think you deserve life ." Coleman cocked his head thoughtfully, concerned. "That seems rather extreme, Warden." life—no, I think not." I threw up my hands. You don't often see somebody do that, but I did. I couldn't figure him. Coleman had wealth and power as a councilman in the real world, but I had thought somehow he wanted to escape to a Coleman smiled benignly. "Certainly, Warden." Horbit was sitting in his detention quarters idly flicking through "How am I going to accomplish that?" Horbit asked worriedly.

<question>:
How did the warden go about solving his conundrum?

<options>:
A He scoured the databases to see if there were any records related to him in Dreamland
B He went about his duties waiting to one day find out the truth
C He developed a moral scenario where it was revealed to him he was in the real world
D He tasked Keller with finding out the Coleman’s background

<answer>:

C