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

<passage>:
MUCK MAN Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] I She was not afraid to meet his eye, the eye of a judicially certified criminal. There was, perhaps, a crease of puzzlement in her brow, as if she had thought crimes were committed by shriveled, rat-faced types, and not by young biological engineers who still affected crewcuts. Tom Dorr, Hazeltyne's general manager, was her escort. Asa felt certain, without proof, that Dorr was the man who had framed him for the charge of grand theft by secreting a fresh Slider egg in his laboratory. The older man stared at Asa coldly as he was led out of Jumpy, Asa's cellmate, took one look at his face as he was put back behind bars. "Guilty," Jumpy said. Asa glared at him. "I know, I know," Jumpy said hastily. "You were framed. But what's the rap?" with his head bent and turned to face Jumpy. "Nope," Asa said softly. "I'm going into a conversion tank. I'm going to be a muck man, Jumpy. I'm going out to Jordan's Planet and hunt "Smuggling? It won't work." Asa didn't answer. The Hazeltyne company had gone after him because Planet, with his physiology adapted to the environment of that wretched duplicate. He might even be able to cause trouble for Hazeltyne. His only problem would be staying alive for a year. whether or not the individual, like Asa, was already experienced. senescence could be staved off, however, any man could have bulging wanted to become a changeling. High pay lured few. So a law was passed permitting a convicted criminal to earn his freedom by putting in one Asa asked the man assigned to his case. It would look suspicious if he muck men on Jordan's Planet." choose Jordan's Planet. Asa frowned in apparent consideration of the Asa raised his eyebrows. "Why such a difference? Everyone knows about muck men living in the "Still," Asa mused aloud, "it would mean a nice bankroll waiting at the decided it was his imagination. He might have been dead cargo for all he learned about space travel. Nevertheless his time was not wasted. He had as a companion, or cellmate, another convict who had elected conversion to muck man. More important, his companion had done time on Jordan's Planet before and had wanted to return. "It's the Slider eggs," explained Kershaw, the two-time loser. "The ones you see on Earth knock your eyes out, but they've already begun to die. There's nothing like a fresh one. And I'm not the first to go crazy over them. When I was reconverted and got home I had nine thousand dollars waiting for me. That'll buy a two-year-old egg that flashes maybe four times a day. So I stole a new one and got caught." ever seen. If Asa had found a means of keeping them alive it would have swooping out of nowhere at you." "I've been meaning to ask you," Asa said. "How do you handle the for home. All this time you're broadcasting for help, you understand. When the Slider catches you, you leap up while it buries its jaws in the mud where you were just standing. You dig your claws in its back comes—and if they don't shoot off your head by mistake—you live to tell the tale." II Asa Graybar kept his normal form on Jordan's Planet just long enough to pounding to keep his blood circulating on this massive world, but the to lose consciousness. "This is it!" he thought in panic. He felt someone ease him back down onto a wheeled stretcher. Before Everyone had seen pictures of muck men. It was different having one claws. The skin was still pinkish but had become scaly. Not a thread of hair showed anywhere on the body, not even on the head. This, Asa realized, was what he looked like himself. It would have been more bearable if the head had not retained strong Asa pushed himself upright with one arm and tried a small hop. Nerve along the wall were thirty stalls for muck men. From fifty yards across the courtyard a muck man bounded over to them Asa was put through a series of exercises to get him used to his "That's to remind you you're still a man," Furston said, grinning. "Everything that grows on this planet is poison. So if you got any Asa turned without a word and hopped feebly away from Furston. He He leaped twenty feet into the air for a closer look. Gazing at him with repugnance, after witnessing the end of his session The girl's presence merely puzzled Asa, but Dorr's being here worried him. Dorr had tried to get rid of him once and was now in an excellent position to make the riddance permanent. At supper that night, squatting on the ground beside a low table with the dozen other muck men operating from the dome, Asa asked what the two were doing out here. "The girl will inherit this racket some day, won't she?" asked one of the others. "She wants to see what kind of suckers are making her rich." "Maybe that guy Dorr brought her along to show her what a big wheel he is," said one of the others. "Just hope he doesn't take over the operations." and work that muck." the muck. a muck man dug in a spiral out from the center, but Graybar and Kershaw about the operation was wrong. "Got it!" Kershaw shouted. He leaped out of the pit and started wiping slime off a round object the size of a baseball. Asa jumped out to being splintered under a brilliant sun. Static crackled in Asa's for help. Asa looked around. Asa leaped with all his strength, sailing far out of the clearing. Asa hopped back to the clearing. Kershaw must have been bowled over by flesh. The Slider writhed, coating its wound in mud, and twisted toward Asa. He leaped to one side, firing from the air and missing, and saw Even as he was knocked aside into the muck, Asa's body was showered Asa took a deep breath and looked around. "Thanks," Kershaw said. "Muck men stick together. You'll make a good getting killed doing this?" "Last time I was here there was about one mucker killed for every six settled down on broad skids. Through the transparent nose Asa could see "You do what I tell you, mucker," said Dorr. worried Asa. for the egg. Finally he realized that Dorr could locate the egg approximately by the body of the dead Slider. Dorr could return for the egg any time with some other muck man to dig for it. Asa pulled down the mouthpiece of his radio. would be lucky if he got back, following a hazy compass course from which he and Kershaw had certainly deviated on their outward trip. There were no landmarks in this wilderness of bog to help him find his helicopter, coming in over the swamp. But what if it was Dorr, coming back alone to dispose of him without any witnesses? Asa leaped for the carcass of the dead Slider and took shelter behind it. flipped forward on its nose, one of the rotor blades plunging deep into the mud. Asa leaped forward in consternation. Not only was his chance of safe passage back to the settlement wrecked, but now he would have the From the way my face feels I ought to be getting a black eye pretty soon." Asa glanced around quickly to make sure no Sliders had already come. He and we started arguing. I lost my temper. He thought he had brought me to Jordan's Planet on a fancy tour. I told him the real reason I was while she stared at him patiently. "What happened to the other muck men

<question>:
What would best describe Asa's motive for working as a muck man?

<options>:
A He is motivated by the high pay rate.
B It was his dream to be a muck man.
C He wants to prove he was framed by Dorr.
D He is seeking revenge.

<answer>:

D