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

<passage>:
Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Agents had killed her husband. produced by it were known as the Stinson Effect. In appearance it resembled a small semi-conductor device. Analysis by the best scientific minds proved it to be a semi-conductor. Yet it held the power to move a body instantly from one point in space Konvs, and had been tempted to identify herself and say, "Here I am. She learned that he was an Agent completely by accident. While cleaning Agent, only one out of all the thousands of Agents all over Earth Together they would seek revenge. He did not have the cylinder—not yet. But he would. The Konvs took care of their own. opening healed. Then no one would ever know, because now they could do it without leaving the tell-tale scar. Then they would seek revenge. Later they would go to Alpha Centaurus, where a life free from Agents "To people seeing you nude." "What?" trousers. "Guess I know now. They made me a Konv." "Well, don't take on so. You'll get used to it." "But they shouldn't have! They didn't even ask me!" right, you're one, too. That is why you killed that Agent in the third followed you. I never told anyone." "But you were only nine!" "They would have taken you away if I'd said anything." knew how to construct it, and he kept the secret, giving cylinders to selected people. He worked out the basic principle, calling it a kinetic ordinate of negative vortices, which was very undefinitive. It was a subject of wonder and much speculation, but no one took serious notice of them until one night a federal Agent arrested one man for indecency. It was a valid charge. One disadvantage of this method of travel was that, while a body could travel instantaneously to any 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 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. the escape without him. Now do you know why I killed the Agent in the third cabin? Everybody says, 'Konv' as if it is something dirty. They write it on "Of course they do—because they don't understand! They are afraid of us. Wouldn't you be afraid of someone who could do the things we do, if you couldn't do them?" knew the habits of Agents. She knew how to avoid them. They would select a spot sufficiently remote to insure detection, she would devise some prank to irritate the Agents then they would quickly would find only the bare footprints of a woman and a boy. They would swear and drive back to their offices to dig through files, searching for some clue to their identity. It was inevitable that they should identify Mrs. Jamieson as one of the offenders, since they had discovered, even before Stinson took his themselves. These could be identified, if caught on their detectors, and even recorded for the files. But the files proved confusing, for had more serious problems. Stinson had selected only the best of the Konvs when he left Earth, leaving all those with criminal tendencies behind. They could have followed if they chose—what could stop them? But it was more lucrative to stay. On Earth they could rob, loot, even murder—without fear of the law. Earl changed. Even before the summer was over, he matured. The childish antics of his Earl was ready for college. They had successfully kept their secret. They had been vigilant in every detail. Earl referred to the "damn Agents" now with a curl of his lip. They had been successful in contacting other Konvs, and sometimes visited them at a remote he would have fully avenged his father's death. He was clever and intelligent. He could kill many Agents. notion that federal Agents were evil creatures, tools of a decadent, bloodthirsty society, living off the fat of the land. "There will be no friends," he answered, "not here. No Konvs will be at likely that Konvs will be found here." You are a Konv. You always will be a Konv. after the first attempt, but he persisted in his efforts to be so. Use of the cylinder was out of the question for them now, anyway. 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 had been killed by the Agents the week before. He had gone completely 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. names would be written, made her furious. How could they? How could the names of murderers look like ordinary names? When she thought them in her mind, they even sounded like ordinary names—and they shouldn't! She had always thought that those names, if she ever saw them, would be filthy, unholy scratches on paper, evil sounds, like the rustle of "Tell me what happened! If an Agent saw you ... well, either he killed you or you killed him. But you're here alive." kill me. We didn't even fight. He didn't ask why I broke in without breaking the lock or even a window. He seemed to know. He did ask what I was doing there, and who I was. I told him, and ... he helped me get him. Then he said he didn't blame me for not telling, that Konvs must 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 hold a Konv. When they break the law, we have no choice. It is a terrible thing, but must be done. We don't want your secret we only want law and order. There is room enough in the world for both of us.'" Mrs. Jamieson was furious. "And you believed him?" "I don't know. I just know what he said—and that he let me go without trying to shoot me." will learn the truth about the Agents." years they might be scattered all over Earth. In the killing of Konvs, some cylinders might even be taken by Agents—and used by them, for the power and freedom the cylinders gave must be coveted even by them. cylinder and were now Konvs themselves. killed by a Konv. The assassin's identity was unknown, but agents were will suspect me. His name was on the list." "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 "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." flesh. "I don't know why. Mother, I'm sorry, but Agents are just people 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 won't be impossible. They will drive their cars through every city on Earth with those new detectors, until they pick up your pattern or might hate them too, or learn to like them. But I can do neither, so I am halfway between, and no man can live this way." Agents have their machines working at top speed, while we sit here and "By mistake. Back in those days, like now, there were good Konvs and crazy with envy. He killed two women there in Bangkok. The Agents Effect but we do know that hate and greed as motivating forces can greatly minimize the cylinders' power. That is why the undesirables The Agents stepped into the room over the broken door. She stared at The Agents' guns rattled.

<question>:
Why do the Agents kill the Konvs?

<options>:
A Once they depart to Centaurus they become unreachable to the law
B They need to keep the number of Konvs down or everyone on Earth might die
C The Konvs are inherently bad for humanity
D They can commit lawless acts without punishment

<answer>:

D