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 rich man died. His heirs sold it. Now it was well insulated and spoke of it, except at first, when Earl was a boy of seven and they had Agents had killed her husband. That was back in '07, on the eve of his departure for Alpha Centaurus but she never spoke of this Stinson and Benjamin, who helped them all get away. And Doctor Straus. And my husband, E. Mason Jamieson, who never got away because those filthy, unspeakable Agents shot him in the back, there in that coffee Once, in the second year after her husband's death, an Agent came and stayed in one of her cabins. She learned that he was an Agent completely by accident. While cleaning the cabin one morning his badge fell out of a shirt pocket. She stood still, staring at the horror of it there on the floor, the shirt in That night she soundlessly lifted the screen from the window over his bed and shot him with a .22 rifle. She threw the weapon into the river. It helped very little. He was one Agent, only one out of all the thousands of Agents all over Earth while her husband had been one of twenty-eight persons. She decided then that her efforts would be too ineffective. The odds were wrong. She would wait until her son, Earl, was grown. It happened to Earl one hot summer day when he was fourteen. Mrs. Earl supposedly was swimming with Earl ran his hand through his hair, shaking his head. "I don't remember Earl faced the window, looking out, then turned quickly back. "What is side." He turned back, a dawning comprehension showing in his eyes. "That's right, you're one, too. That is why you killed that Agent in the third cabin." It was her turn to be surprised. "You knew about that?" chosen spot, it arrived without clothes. The arrested man disappeared from his jail cell, and the next morning the Agent was found strangled to death in his bed. This set off a campaign against Konvs. One base act led to another, until the original reason for noticing them at all was lost. Normal men no longer thought He returned for the others. They gathered one night in a dirty, broken-down farmhouse in Missouri—and disappeared in a body, leaving the Agents standing helplessly on Earth, shaking their fists at the sky. "You have asked many times," Mrs. Jamieson said, "how your father died. Now I will tell you the truth. Your father was one of the great the escape but the Agents found him in Bangkok fifteen minutes before the group left. They shot him in the back, and the others had to go on without him. Now do you know why I killed the Agent in the third cabin? I had to. Your father was a great man, and I loved him." That is, the first shock was over. Mrs. Jamieson watched Earl leave the at night mostly, taking longer and longer jumps, until Earl's They would select a spot sufficiently remote to insure detection, she would devise some prank to irritate the Agents then they would quickly Earl changed. describe the horror in Lisa's young mind when the news went out that E. Mason Jamieson had been killed. She wanted him to learn as much as possible about his father's death, knowing that soon the Agents would be after Earl. They were so clever, so persistent. She wanted him to be Earl was ready for college. They had successfully kept their secret. he would have fully avenged his father's death. He was clever and intelligent. He could kill many Agents. So she exhumed the money she had hidden more than ten years before. Excitement brought color to her cheeks when she thought of Earl facing finished she showed Earl regally into the room, making a big joke of it. the university." "Why not? Stinson selected only educated, intelligent people. When one dies the cylinder is taken and adjusted to a new thought She turned her back and slammed the door. Earl stood very still for Earl did not use the room that first year. He slept in the second papers daily for some word of Konvs being killed. The second day after his disappearance she found a small item. A Konv had raided the Agent's office in Stockholm, killing three, and getting killed himself. Mrs. Jamieson dropped the paper immediately and went to Stockholm. She did not consider the risk. In Stockholm she found clothes and made discreet inquiries. The slain man had been a Finnish Konv, one of those left behind by Stinson as an undesirable. His wife had been killed by the Agents the week before. He had gone completely insane and made the raid singlehanded. Mrs. Jamieson read the account of crimes committed by the man and his wife, and determined to prevent Earl from making the mistake of taking on more than he could handle. When she arrived at her own home, Earl was in his room. "I don't know," he said. "Curiosity, maybe, or a subconscious desire for revenge. I just wanted to see them." "Tell me what happened! If an Agent saw you ... well, either he killed you or you killed him. But you're here alive." "I didn't kill him. That's what seems so strange. And he didn't try to fear Agents, and hate them. Then he said, 'Do you know why we kill Konvs? We kill them because there is no prison cell in the world that will learn the truth about the Agents." Beyond the closed door, out of sight of her son, Mrs. Jamieson gave rein to the excitement that ran through her. He had wanted the names! her. She didn't know where the men were now, those who had killed her husband. They could be anywhere. Agents moved from post to post in ten years they might be scattered all over Earth. In the killing of Konvs, cylinder and were now Konvs themselves. Two weeks later she read a news item saying that Tom Palieu had been killed by a Konv. The assassin's identity was unknown, but agents were working on the case. She knew. She had found a gun in Earl's desk. "They will," she agreed. "It doesn't matter who the Konv is, now that an Agent has been killed. The one in Bangkok will tell them about you and the list of names, and it's all they need." "Well, what else can he do?" Earl asked. "After all, he is an Agent. If one of them is killed, he will have to tell what he knows." "You're defending him? Why?" she cried. "Tell me why!" He removed her hand from his arm. Her nails were digging into his flesh. "I don't know why. Mother, I'm sorry, but Agents are just people to me. I can't hate them the way you do." Mrs. Jamieson's face colored, then drained white. Earl stunned immobile—not by the blow, but from the knowledge that she calmly. "They won't find us." "Oh, yes they will," she said. "Don't underestimate them. Agents are picked from the most intelligent people on Earth. It will be a small job for them. Don't forget they know who you are. Even if you hadn't Earl sat down suddenly, "It's just as well. I thought maybe some day I Agents have their machines working at top speed, while we sit here and talk." Suddenly they were not alone. Earl said, "Why was my father killed?" "By mistake. Back in those days, like now, there were good Konvs and bad. One of those not selected by Stinson to join us was enraged, half crazy with envy. He killed two women there in Bangkok. The Agents thought Jamieson—I mean, your father—did it. Jamieson was the Benjamin held out his hands. They took them, to increase the power of the cylinders. As the Agents pounded on the door, Mrs. Jamieson flicked one thought of hatred at them, but of course they did not hear her. Benjamin's hands gripped tightly. her son were gone. Her outstretched hands touched nothing. Her power was gone! The Agents stepped into the room over the broken door. She stared at them, then ran to Earl's desk, fumbling for the gun. The Agents' guns rattled.

<question>:
What happens to Earl in the end?

<options>:
A He goes on to live on Centaurus
B He never leaves Earth, hell bent on avenging his mother
C He removes his cylinder
D He is killed by the Agents

<answer>:

A