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 U.S. copyright on this publication was renewed.] The most dangerous is not the outlawed murderer, who only slays men, but the rebellious philosopher: for he destroys worlds. Darkness and the chill glitter of stars. Bo Jonsson crouched on a The stars blazed with a cruel wintry brilliance, over him, around him, light-years to fall through emptiness before he reached one. He had been alone among them before he had almost thought them friends. Sometimes, on a long watch, a man found himself talking to Vega or Spica or dear old Beetle Juice, murmuring what was in him as if the Bo Jonsson looked at the wrench in his hand. It was long and massive, the stars and reset the machinery of a universe gone awry. He smiled stiffly at the thought. He wanted to laugh too, but checked himself for fear he wouldn't be able to stop. Let's face it , he told himself. miles, probably more if you allowed for the rough surface. He could skulk around, hide ... and suffocate when his tanked air gave out. He had to be a hunter, too, and track down the other man, before he died. And if he found his enemy, he would probably die anyway. October. Suit, equipment, and his own body, all together, weighed only fields which had never known life. It was like being dead already. Bo Jonsson's tongue was dry and thick in his mouth. He wanted to find his enemy and give up, buy existence at whatever price it would command. But he couldn't do that. Even if the other man let him do it, start out on his own—a race of individualists, rough and noisy and jealous, but living under iron rules of hospitality and rescue. even for that planetoid, it is a rowdy bar where Guardsmen come in trios. But Johnny Malone liked it, and talked flowing tunic and slacks, a beret cocked on his sleek head. But somehow he didn't grate on Bo, they had been partners for several years now. They pushed through a milling crowd at the bar, rockhounds who watched one of Achilles' three live ecdysiasts with hungry eyes, and by some miracle found an empty booth. Bo squeezed his bulk into one side of the drinks. Bo was larger and heavier than most spacemen—he'd never have content to let others talk while he listened. A placid blond giant, with amiable blue eyes in a battered brown face, he did not consider himself bright, and always wanted to learn. Johnny gulped his drink and winced. "Whiskey, they call it yet! Water, "Everything's expensive here," said Bo mildly. "That's why so few it just as fast to stay alive." "Yeh ... yeh ... wish they'd spend some of it on us." Johnny grinned ." Bo kept on sipping slowly. "Johnny," he said, raising his voice to cut through the din, "you're an educated man. I never could figure out why you want to talk like a jumper." "Because I am one at heart. Look, Bo, why don't you get over that inferiority complex of yours? A man can't run a spaceship without knowing more math and physical science than the average professor on Earth. So you had to work your way through the Academy and never had a chance to fan yourself with a lily white hand while somebody tootled Bo chuckled. The Company consisted of (a) the Bo shook his head and watched his partner move off, swift in the puny Bo sighed, feeling a bit lonesome. If he wasn't going to make a night tablets. Besides what he was putting back into the business, he was trying to build a private hoard some day, he'd retire and get married A sharp noise slashed through the haze of talk and music Bo looked up. Johnny made some reply. Bo heaved up his form and strode toward the "Run along and play, son," said Johnny. "Or do you want me to change that diaper of yours?" That was when it happened. Bo saw the little needler spit from the only clear thought which ran in the sudden storm of Bo's head. Bo had seen death before. That needle wasn't anesthetic, it was poison. next face of the rough cube which was the asteroid. Bo lay on his belly Bo stood unmoving an instant, fighting the impulse to leap away. He was with an ultimate cold. Around him, world and stars rippled as if seen through heat, through fever. He hung on the edge of creation by his fingertips, while chaos shouted beneath. might get too tired at the critical moments. Bo knew he wouldn't be allowed to leave Achilles without a certified partner, and unemployed Bo didn't care the first day. He had taken Johnny out to Helmet Hill his main thought a dull dread of having to tell Johnny's father when he reached Luna. He was too slow and clumsy with words his comforting hand would only break the old man's back. Old Malone had given six sons It hardly seemed to matter that the Guards office reported itself "Hadn't you heard?" asked Bo. He found it hard to believe she could "Oh ... I'm sorry. He was such a nice little man—I've been in the lab Bo shrugged, not caring much. "I'll circulate an ad if you want, but—" too ... you didn't get to be a physicist with the Union's radiation labs for nothing. He knew she was still young, and that she had been on Achilles for about a year working on some special project and was now ready to go home. danced and laughed and flirted mildly, but even the dullest rockhound was rare, and a virtuous woman unheard-of as a result, unknown to herself, Dr. McKittrick's fame had spread through more thousands of people and millions of miles than her professional achievements were Since coming here, on commission from the Lunar lab, to bring her home, Bo Jonsson had given her an occasional wistful thought. He liked intelligent women, and he was getting tired of rootlessness. But of course it would be a catastrophe if he fell in love with her because she wouldn't look twice at a big dumb slob like him. He had sweated out a couple of similar affairs in the past and didn't want to go through another. the evening he found himself weeping. He woke up many hours later. Achilles ran on Earth time but did not rotate on it neat even without clothes. "Jonsson," said Bo. "Sorry to get you up, Bo felt his mouth gape open. "Huh? I never thought—" the slightest trace of accent, less than Bo's. "I thought I was stashed Bo nodded, for every spaceman knows exactly what every spaceship is Bo had heard of it in the course of the difference in mass would make up for the fuel loss. I during my watch, and even if nobody blamed me I couldn't help feeling guilty." Bo understood that kind of loyalty. You couldn't travel space without men who had it. it emphasized the bright charm of his manner. "Sunblaze. I'll work for free." "Notice a year's gap here," said Bo, pointing to the service record. Bo went at his share of the job doggedly, checking and re-checking before giving the problem to the machine Lundgard breezed through it and spent his time while waiting for Bo in swapping dirty limericks with the tech. He had some good ones. The Sirius Bo relaxed against the thrust, thinking of Achilles falling away behind III In another minute, he would be knotted and screaming from the bends, Bo clamped his teeth together, as if he would grip consciousness in not to howl with the fury ripping in his nerves. His body was slow, inert, a thing to fight. There was no more feeling in his back, was he dead already? Redness flamed before his eyes, red like Valeria's hair blowing across Bo's mind wavered back toward life. He opened the valves wide on his to lie on naked rock while the enemy hunted him. Bo shuddered and back into numbed hands and feet soon he would be warm all over, and

<question>:
How was Bo unusual compared to his colleagues?

<options>:
A He was fastidious
B He was a frugal man
C He was a large man
D He loved to learn

<answer>:

C