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

<passage>:
prepared for the more humbling facts of life. SCRIMSHAW The old man gently hellish, from the viewpoint of the just wanted to get back his learned of it the same way. Pop didn't memory—and the methods he used were Pop Young was the one known Sattell undoubtedly dealt with it fully in his desperate writings back to Earth. Pop matter-of-factly tended the ghastly head-wound to explain his ability. One man partly guessed the secret, but only partly. His name was Sattell and he had reason not to mind on Sattell—he found fresh incidents torment. By night—lunar night, of course, and lunar day—it was frigidity and horror. Once in two weeks Pop received the stores and Pop didn't even ask. The Crack, of course, was that gaping rocky fault which stretches nine hundred miles, jaggedly, over the side of the Moon that Earth Pop continued to search absorbedly industriously at recovering some missing portions of his life that Sattell He thought often of Sattell, down happily tell himself that it feels delicious. But Sattell couldn't comfort himself Pop made his way toward it in Sattell got the shakes when he thought of Pop, and Pop rather it with what—say—Sattell might Sattell. The facts spoke for themselves. about Pop Young's shack in cannisters 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 open, and Pop reached up and gave no longer remember. He met Sattell quite by accident. Sattell looked familiar. Pop eagerly tried to ask him questions. And Sattell turned gray grinned savagely at Pop. He held a very nasty hand-weapon trained on Pop's middle. seen Pop before. to Pop that the sight of Sattell had about how you are. This isn't social. memories. They were not sharp, though, and he hunted up Sattell Pop simply gaped. He couldn't And Sattell went into panic when man abruptly, "is a stickup!" Nowadays, by the Big Crack, Pop wasn't so insistent on seeing Sattell, quite take it in. "This," snapped the red-headed Sattell helped bring back. Pop was Pop's eyes went through the inner Pop gazed at the plastic, snarling. He slashed Pop across the face with the barrel of his weapon. It drew blood. It was wanton, savage brutality. "Pay attention!" snarled the red-headed man. "A stickup, I said! Get of jagged crater-walls. It slowed, and slowed, and curved down as it drew Pop said numbly: "What the nearer. The pilot killed all forward therefore, he wanted to hurt. "Move!" he rasped. "I want the licked blood from his lips and the man with the weapon raged at him. Tell Sattell I'm here and he can At such times Pop hardly thought of Sattell. He knew he had plenty Sattell knowing what had happened of them at all. But Sattell stirred We didn't come here for nothing!" He twitched all over. Then he struck cruelly again at Pop Young's recover a good deal. When Sattell face. He seemed filled with fury, at because he had some distinct memories of his wife—and the way savagery due to terror. But, of course, Pop was helpless to resent When Sattell frenziedly tried to deny Moon and the mention of Sattell's Pop had come to remember both his he'd felt about her—and some fugitive Even when Sattell—whimpering—signed 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. Outrushing air tugged at Pop. After he didn't really want Sattell to die. Somehow, the mention of Sattell had odd fancies about Sattell. There was detail. He knew Sattell. That part was simple. Sattell had planned this sometimes Pop wondered if Sattell more than two men—with Sattell as a woman and two children and think he'd killed a man for no more than a hundred dollars, what enormity would he commit for a three-gallon message he'd been told to pass on. Sattell to come up, with what diamonds "I'd guess," said Pop painstakingly, "that Sattell figured it out. He's won't." A shaking voice asked questions dead and the shacks smashed and the cable burnt through, they'll be But not Pop. He'd come to the cable's been got and let down to you. So they'll do all they can no matter was here. Near Sattell, he found tell Sattell a thing about it, if I were what I do." He added, "I wouldn't emptiness and grew sharp and clear. He found that he loved them very dearly. And when he was near Sattell back on Earth long before a new memories of them every day. He hadn't yet remembered the crime which lost them to him. Until he did—and the fact possessed a certain grisly humor—Pop didn't even hate Sattell. He simply wanted to be near "And I don't give a damn Pop regarded his drawings meditatively. It's business!" satisfaction. "That'll do it!" He tore bed linen from his bunk froze solidly out of it there, and on beyond it collected as restless, repeated violent changes of temperature. So a thermware-lined cannister often Pop tapped the pipe where the in balance. He poured the frigid, Sattell, he suddenly recovered a completely truthful likeness. The sun rose, and baked the abomination of desolation which was Pop reflected hungrily that it was permanent and to extend it— If it had not been for his vacuum suit and the cannister he carried, Pop clearly when he thought of Sattell, so by keeping Sattell in mind he recovered the memory of a chair that had been in his forgotten home. shook and trembled. Pop said calmly: hoist, if Sattell's coming up from the mine. If I don't do it, he don't come up." The red-headed man snarled. But his eyes were on the cannister whose contents should weigh a hundred pounds on Earth. "Any tricks," he rasped, "and you sketching, save that he'd lost all his "Yeah," said Pop. Sattell had no such device for adjusting young manhood through a senseless much worse. Sattell clearly remembered 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 ferocity. And fear. In his mind the need to escape became an obsession on top of the other psychotic states He wrote with the desperate, impassioned, frantic blend of persuasion and information and genius-like invention Pop didn't wait. He searched bore directly upon Pop Young and Sattell and Pop Young's missing "Don't do a thing," advised Pop. to do with Pop or with Sattell. But But the passengers who paid so highly, expected to be pleasantly thrilled and shielded from all reasons for alarm. And they couldn't be. Something worked, he'd think of Sattell, because happens when a self-centered and complacent individual unsuspectingly parts Sattell had managed to get He didn't wonder what he'd do if he ever remembered the crime Sattell had committed. He felt, somehow, that he wouldn't get that back until he'd recovered all the rest. Gloating, it was amusing to remember what people used to call face of immensity. Not one passenger disembarked even for Lunar City. Most of them cowered in their pleasure-passengers. They weren't

<question>:
Which of the following describes Pop's attitude toward Sattell?

<options>:
A obsessive
B delirious
C ambivalent
D vengeful

<answer>:

A