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 work wasn't hard, but there were some sacrifices. You had to give up hope and freedom—and being human! bailiff lead Asa Graybar out of the courtroom. He recognized her as girl whose father owned the most valuable of the planetary franchises. She was not afraid to meet his eye, the eye of a judicially certified 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 Asa glared at him. "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 Asa didn't answer. The Hazeltyne company had gone after him because of so-called social reorientation. But if he could get out to Jordan's Planet, with his physiology adapted to the environment of that wretched world, he could study the eggs under conditions no laboratory could of altered shape before they signed a release. The requirement held whether or not the individual, like Asa, was already experienced. By the time humanity traveled to the stars, medical biology had made it possible to regenerate damaged or deficient organs of the body. Regeneration was limited only by advanced age. Sometime after a man's From regeneration it was a short step to specialized regrowth. The techniques were perfected to adapt humans to the dozen barely habitable worlds man had discovered. Even on Mars, the only planet outside Earth in the solar system where the human anatomy was remotely suitable, a man could work more efficiently with redesigned lungs and temperature controls than he could inside a pressure suit. On more bizarre planets a few light-years away the advantages of changeling bodies were greater. Unfortunately for planetary development companies, hardly anyone 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 asked for Jordan's Planet without some preliminary questions. "Four," answered the doctor. with the arm structure modified into pseudo-wings or gliding. Then we need spiderinos for Von Neumann Two. If you want the nearest thing we have to Earth, there's Caesar's Moon, where we'd just have to double your tolerance for carbon monoxide and make you a bigger and better gorilla than the natives. Last, of course, there's always a need for muck men on Jordan's Planet." The doctor shrugged, as if naturally no one could be expected to choose Jordan's Planet. Asa frowned in apparent consideration of the alternatives. "What's the pay range?" he asked. "Ten dollars a day on Caesar's Moon. Fifteen on New Arcady or Von Neumann Two. Twenty-five on Jordan's." Asa raised his eyebrows. "Why such a difference? Everyone knows about muck men living in the sight of yourself. And we can't guarantee that a Slider won't kill you." "Still," Asa mused aloud, "it would mean a nice bankroll waiting at the end of the year." He leaned forward to fill in the necessary form. Since it was cheaper to transport a normal human than to rig special environments in a spaceship, every planet operated its own conversion chambers. On the space freighter that carried him from Earth Asa Graybar was confined to a small cabin that was opened only for a guard to bring meals and take out dirty dishes. He was still a prisoner. spaceships nor worked in the dome settlements on harsher worlds, he 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 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 It took about four years for a Slider egg to die. Beauty, rarity and fading value made the eggs a luxury item like nothing the world had ever seen. If Asa had found a means of keeping them alive it would have made him wealthy at the expense of the Hazeltyne monopoly. "I've been meaning to ask you," Asa said. "How do you handle the Asa Graybar kept his normal form on Jordan's Planet just long enough to learn the discomfort of double gravity. He was told he needed another physical examination and was taken right in to a doctor. His heart was pounding to keep his blood circulating on this massive world, but the doctor had apparently learned to make allowances. Asa swallowed the capsule. Two minutes later he felt himself beginning It was not Kershaw's voice, but it had to be Kershaw. Asa opened his so that his arms dangled to the ground. The arms were as thick around as an ordinary man's legs. The hands had become efficient scoops, with This, Asa realized, was what he looked like himself. Asa pushed himself upright with one arm and tried a small hop. Nerve of Jordan's Planet and turned most of its surface into marsh and mud you." He pointed to Asa and leaped to the open portion of the courtyard. Asa was put through a series of exercises to get him used to his Asa turned without a word and hopped feebly away from Furston. He The girl's presence merely puzzled Asa, but Dorr's being here worried 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 show Asa the ropes. Asa had already learned that the wall around the before it was thrown away, to make sure it didn't conceal an egg. As he worked, Asa kept thinking what an inefficient system it was. Everything 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 Aiming hastily, Asa fired a rocket at the monster's middle segment. The 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. Asa leaped over to him. Asa hopped over to the egg, which was still full of a dancing radiance settled down on broad skids. Through the transparent nose Asa could see helicopter, Asa got under his companion's belly and lifted him by the Kershaw, as a muck man, would have weighed close to three hundred pounds on Earth, close to six hundred here. Asa didn't hesitate. "The egg stays with me," he said softly. "Nope. I want to make sure you come back." Asa turned his head to worried Asa. Asa pulled down the mouthpiece of his radio. There were no landmarks in this wilderness of bog to help him find his way. The workers were supposed to home in on radio signals, if they lost their bearings, but Dorr would deny him that help. What was the night like on Jordan's Planet? Maybe Sliders slept at night. If he could stay awake, and if he didn't faint from hunger in A whirring noise made Asa jump in alarm. back alone to dispose of him without any witnesses? Asa leaped for the Asa leaped forward in consternation. Not only was his chance of safe 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 here was to check up for my father on the way he was running things and

<question>:
What was Asa's true motivation for choosing Jordan's Planet?

<options>:
A Studying Slider eggs in their natural habitat.
B He wanted to serve a reduced sentence.
C The conversions made mud-dwelling more comfortable.
D The bankroll was far greater than on other planets.

<answer>:

A