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

<passage>:
even think of it again. It seemed Pop Young was the one known to have nothing to do with him. But fully in his desperate writings back to Earth. Pop matter-of-factly tended the surface of the Moon's far side, and, Sattell undoubtedly dealt with it ghastly head-wound to explain his ability. One man partly guessed the it any time he chose. He did actually recover a completely vanished Earth-time a rocketship came around the horizon from Lunar City with stores for the colony deep underground. took care of them. He handed over from Earth, on a voyage equal to rather more than a thousand times to Earth. The rocket went away again. Come nightfall Pop the product of the mine, to be forwarded around the equator of the Earth. lowered the supplies down the long Pop didn't even ask. without him the mine down in the Crack would have had to shut down. The Crack, of course, was that the side of the Moon that Earth is nothing like it on Earth, of course. When it was first found, scientists descended into it to examine the exposed than history. They found the reason for the colony and the rocket landing The reason for Pop was something but— Early one lunar morning he was when he saw rocket-fumes in the sky. It was most unlikely. He wasn't on the Moon. In the Moon's slight gravity, But Sattell couldn't comfort himself so easily. He knew about Pop, up on the surface. He'd shipped out, whimpering, to the Moon to get far Pop made his way toward it in kinks in his head to survive. And those kinks— The first men to leave the colony had to be knocked cold and shipped on the far side of the Moon. out unconscious. They'd been underground—and the idea of open spaces. Even now raising a trail of slowly settling to see the sky. In any case Pop was didn't come from Lunar City, but from Earth. He couldn't imagine why. He did not even wildly connect thought of Pop, and Pop rather it with what—say—Sattell might powder. He knew only that the ship crystals out of the mine, knocking Pop reached the rocketship. He who he was, and as gently as possible what had happened to his wife and children. They'd been murdered after he was seemingly killed defending them. But he didn't remember Pop eagerly tried to ask him though, and he hunted up Sattell again to find out if he was right. And Sattell went into panic when Nowadays, by the Big Crack, Pop a rocketship from Lunar City got of jagged crater-walls. It slowed, and slowed, and curved down as it drew nearer. The pilot killed all forward motion just above the field and came therefore, he wanted to hurt. diamonds you've got for the ship from Lunar City! Bring 'em!" Pop licked blood from his lips and the At such times Pop hardly thought Sattell knowing what had happened to his wife and children, but wiped out by an axe-blow. He did recover a good deal. When Sattell fled to another continent, Pop followed because he had some distinct memories of his wife—and the way he'd felt about her—and some fugitive of course, Pop was helpless to resent Pop had come to remember both his children and some of the happiness up for Lunar City, Pop tracked him. By that time he was quite sure that Sattell was the man who'd killed his family. If so, Sattell had profited by less than two days' pay for wiping out everything that Pop possessed. But Pop wanted it back. He couldn't prove Sattell's guilt. There was no evidence. In any case, he didn't really want Sattell to die. If he did, there'd be no way to recover more lost memories. Outrushing air tugged at Pop. After side of the Moon, Pop Young had it was stolen for the journey here. Sattell's associates had had to on the Moon Pop kept a waiting cannister ever thought of the value of the mine's production. If he would kill a woman and two children and think he'd killed a man for no more than a hundred dollars, what enormity presently. Otherwise the ship on the landing strip would destroy shack and Pop and the colony together. "I'd guess," said Pop painstakingly, "No," said Pop, "they'll do it anyhow. If we were able to tell about 'em, they'd be chased. But if I'm dead and the shacks smashed and the cable burnt through, they'll be back on Earth long before a new cable's been got and let down to you. So they'll do all they can no matter But not Pop. He'd come to the what I do." He added, "I wouldn't Moon in the first place because Sattell memories of them every day. He hadn't yet remembered the crime took down the cannister of diamonds which were worth five millions or more back on Earth. He found a bucket. He dumped the diamonds which lost them to him. Until he casually into it. They floated downward Pop regarded his drawings meditatively. Earth newly-mined diamonds sometimes fly to pieces from internal stress. On the Moon, it was not desirable that diamonds be exposed to ice clattered out to be returned to the humidifier. Less often he took out the CO from space that had made them. the moonscape. Pop Young meticulously Pop reflected hungrily that it was port and sees the cosmos unshielded Pop reached the rocket. He parts Sattell had managed to get There was no purpose in the sketching, save that he'd lost all his contents should weigh a hundred pounds on Earth. "Any tricks," he rasped, "and you live on the surface of the far side of to the lunar state of things. Living on the Moon was bad enough the crime Pop Young hadn't yet recalled. He considered that Pop had made no overt attempt to revenge himself because he planned some retaliation so horrible and lingering that it was worth waiting for. He came to hate Pop with an insane need to escape became an obsession on top of the other psychotic states normal to a Moon-colonist. But he was helpless. He couldn't kill Pop. He had no chance—and he was afraid. The one absurd, irrelevant thing he could do was write letters back to Earth. He did that. He wrote with the desperate, impassioned, frantic blend of persuasion prison, trying to induce someone to help him escape. But the ship had fuel on board for the trip back to Earth. And it blew, too. It would be minutes before all the fragments of the ship returned to the Moon's surface. On the Moon, But then an event occurred which bore directly upon Pop Young and Sattell and Pop Young's missing Moon. It looked like a perfect set-up. What do we do?" "Don't do a thing," advised Pop. "It's all right. I blew up the ship and everything's all right. I wouldn't even mention it to Sattell if I were Moon's far side and trips through pictures of his wife and children in order to recover memories of happens when a self-centered and complacent individual unsuspectingly looks out of a spaceship missing portions of his life—the away from him. He'd get back more than ever, now! He didn't wonder what he'd do A millionaire cut his throat when if he ever remembered the crime Sattell had committed. He felt, somehow, that he wouldn't get that back he saw Earth dwindled to a mere blue-green ball in vastness. He could until he'd recovered all the rest. with only four passengers and turned back before reaching the Moon. Space-pilots could take the strain of space-flight because they had work to do. Workers for the lunar mines could make the trip under heavy sedation. But it was too early in the development of space-travel for

<question>:
What motivates Pop Young to live on the far side of the moon?

<options>:
A He is being compensated for a wrongful death suit that occurred back on Earth
B He is close to Sattell's location, which enhances his memories of his wife and children
C If he left his post, there would be no one to monitor the mines in the Big Crack
D If he returned to Earth, he would be arrested for the murder of his family

<answer>:

B