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

<passage>:
learned of it the same way. Pop didn't Pop Young was the one known fully in his desperate writings back to Earth. Pop matter-of-factly tended the shack and the landing field and the stores for the Big Crack mine. Between-times surface of the Moon's far side, and, therefore, he occupied the shack on the Big Crack's edge, above the torment. By night—lunar night, of course, and lunar day—it was frigidity and horror. Once in two weeks Earth-time a rocketship came around the horizon from Lunar City with stores for the colony deep underground. Pop received the stores and took care of them. He handed over the product of the mine, to be forwarded to Earth. The rocket went away again. Come nightfall Pop around the equator of the Earth. Pop didn't even ask. He began to explore the area outside the shack for possible material Artists' supplies were not often included. Moon. All freight had to be hauled sorts, but when warmed up in the shack they were useless. He found no strictly lunar material which would serve for modeling or carving portraits in the ground. He found for the colony and the rocket landing field and the shack. The reason for Pop was something mineral he required. Marble would have been perfect, but there is no marble on the Moon. Naturally! Yet Pop continued to search absorbedly for material with which to capture but— Early one lunar morning he was a good two miles from his shack when he saw rocket-fumes in the heat of day. Pop lived in it all alone, over the horizon, not in the direction of Lunar City. Which was more impossible still. He stared. A tiny silver rocket to on the Moon. But it wasn't fun, even underground. so easily. He knew about Pop, up on the surface. He'd shipped out, whimpering, to the Moon to get far away from Pop, and Pop was just Pop made his way toward it in landed. Then nothing happened. about a mile overhead and there was low indeed in the black, star-speckled sky. Pop waded through moondust, raising a trail of slowly settling powder. He knew only that the ship didn't come from Lunar City, but from Earth. He couldn't imagine why. He did not even wildly connect to see the sky. In any case Pop was thought of Pop, and Pop rather probably knew it. Of course, by the crystals out of the mine, knocking about Pop Young's shack in cannisters containing a hundred Earth-pounds Pop had come back to consciousness Pop reached the rocketship. He weight of richness. time he took the job tending the Pop eagerly tried to ask him and frantically denied that he'd ever seen Pop before. All of which happened back on he returned. Nowadays, by the Big Crack, Pop good care of his job. There was a warning-bell in the shack, and when a rocketship from Lunar City got above the horizon and could send a tight beam, the gong clanged loudly, and Pop got into a vacuum-suit Pop gazed at the plastic, fascinated. landing, and he watched it come in. man. "A stickup, I said! Get it? You go get that can of stuff from the mine! The diamonds! Bring them here! Understand?" Pop said numbly: "What the He saw the silver needle in the "Move!" he rasped. "I want the diamonds you've got for the ship from Lunar City! Bring 'em!" Pop licked blood from his lips and the man with the weapon raged at him. Tell Sattell I'm here and he can come on up! Tell him to bring any more diamonds they've dug up since the stuff you've got!" At such times Pop hardly thought 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 of course, Pop was helpless to resent Pop had come to remember both his He'd pictured the complete set-up of his married life. Even when Sattell—whimpering—signed up for Lunar City, Pop tracked him. By that time he was quite sure that Sattell was the man who'd by the edge of the Big Crack. Pop more lost memories. Sometimes, in the shack on the far side of the Moon, Pop Young had in carats, and a hundred pounds was worth millions. Yet here on the Moon Pop kept a waiting cannister on a shelf in his tiny dome, diamonds worth at least five million dollars waiting for them, and the whole job might not have called for behind the air-apparatus. It rattled was being done. and called the mine-colony down in the Crack. He gave the message he'd been told to pass on. Sattell to come up, with what diamonds had been dug since the regular cannister was sent up for the Lunar City ship that would be due presently. Otherwise the ship on the landing strip would destroy shack and Pop and the colony together. "I'd guess," said Pop painstakingly, But not Pop. He'd come to the Moon in the first place because Sattell was here. Near Sattell, he found "Me?" asked Pop. "Oh, I'm going took down the cannister of diamonds which were worth five millions or more back on Earth. He found a bucket. He dumped the diamonds casually into it. They floated downward with great deliberation and did—and the fact possessed a certain grisly humor—Pop didn't even hate Pop regarded his drawings meditatively. of the Moon. He was a rather fussy Sattell. He simply wanted to be near Earth newly-mined diamonds sometimes fly to pieces from internal stress. On the Moon, it was not desirable that diamonds be exposed to repeated violent changes of temperature. quantity of uncut diamonds? Pop packed the cotton cloth in the But he did not dwell on such else. abomination of desolation which was the moonscape. Pop Young meticulously touched up the glittering triangles which were landing guides for the Lunar City ships. They glittered from the thinnest conceivable layer of magnesium marking-powder. Pop reflected hungrily that it was would have rubbed his hands. Tall, jagged crater-walls rose from the lunar plain. Monstrous, extended floated low at the edge of things and seemed to hate all creation. Pop reached the rocket. He diamonds knocking about unguarded in the shack, and he suddenly recollected clearly the way one of his to the lunar state of things. Living on the Moon was bad enough He came to hate Pop with an insane ferocity. And fear. In his mind the need to escape became an obsession normal to a Moon-colonist. But he was helpless. He couldn't leave. There was Pop. He couldn't kill Pop. He had no chance—and he to the Moon's surface. On the Moon, things fall slowly. Pop didn't wait. He searched hopefully. Once a mass of steel plating fell only yards from him, but it Sattell and Pop Young's missing years. Somebody back on Earth promoted Moon. It looked like a perfect set-up. reams of publicity. They promised a thrill and a new distinction for the rich. Guided tours to Lunar! The most expensive and most thrilling trip in history! One hundred thousand Moon's far side and trips through Lunar City and a landing in Aristarchus, plus sound-tapes of the journey and fame hitherto reserved for not too far from where the ship exploded. When the man down in the mine cut off, Pop got out of his vacuum suit in a hurry. He placed disembarked even for Lunar 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

<question>:
Why did Pop go to Lunar City?

<options>:
A Pop went to Lunar City because the Earth is overcrowded.
B Pop went to Lunar City because Sattell went to Lunar City.
C Pop went to Lunar City because his family was murdered, and he couldn't stand to be on Earth any longer.
D Pop went to Lunar City to mine diamonds.

<answer>:

B