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

<passage>:
Mrs. Jamieson and her son were very comfortable, even in the coldest but she never spoke of this and she was very careful not to move from place to place except by the conventional methods of travel. "There goes one of the old-fashioned ones. That hair-do was popular back in the sixties." They did not suspect that she did this only to cover the thin, pencil-line scar, evidence that a small cylinder lay under her skin behind the ear. For Mrs. Jamieson was one of the Konvs. Her husband had been one of the small group who developed this tiny Several times in the past seven years Mrs. Jamieson had seen other 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 her hands, all the loneliness returning in a black wave of hate and That night she soundlessly lifted the screen from the window over his bed and shot him with a .22 rifle. then that her efforts would be too ineffective. The odds were wrong. She would wait until her son, Earl, was grown. Together they would seek revenge. He did not have the cylinder—not yet. But he would. The Konvs took care of their own. Her husband had been one of the first, and they would not forget. One day the boy would disappear for a few hours. When he returned the small patch of gauze would be behind his ear. She would shield him until the 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 Jamieson was working in her kitchen nude. At sight of his mother his face paled and he began to shake violently, so that she was forced to slap him to prevent hysteria. She looked behind his ear. It was there. He started for his room, but she stopped him. "No, do it right here. You may as well get used to it now." "Better put your trousers on," Mrs. Jamieson said. "It's something very unusual and terrible to think of at first, but really wonderful." "But what happened? What is this patch behind my ear?" "Well, don't take on so. You'll get used to it." "But they shouldn't have! They didn't even ask me!" He started for the door, but she called him back. "No, don't run away from it now. This is the time to face it. There are two sides to every cabin." It was her turn to be surprised. "You knew about that?" "I saw you. I wasn't sleeping. I was afraid to stay inside alone, so I followed you. I never told anyone." Mrs. Jamieson held out her hand. "Come here, son. It's time I told you Mrs. Jamieson told how Stinson, knowing he had made too many cylinders "You have asked many times," Mrs. Jamieson said, "how your father the walls in rest rooms." "Of course they do—because they don't understand! They are afraid of That is, the first shock was over. Mrs. Jamieson watched Earl leave the For the remainder of that summer they worked together. They practiced at night mostly, taking longer and longer jumps, until Earl's confidence allowed him to reach any part of the Earth he chose. She 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 It was inevitable that they should identify Mrs. Jamieson as one of they said that Mrs. Jamieson had gone to Centaurus with the others. 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 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 ready, not only in ways of avoiding their traps ... but ready with a heart full of hate. Sometimes when she talked about her husband, Mrs. Jamieson wanted to stand up and scream at her son, "Hate, hate! Hate! You must learn to hate!" But she clenched her hands over her knitting, knowing that he would learn it faster if she avoided the word. The winter passed, and the next summer, and two more summers. Earl was ready for college. They had successfully kept their secret. She did not mention her secret hope, that before they left Earth he would have fully avenged his father's death. He was clever and He could kill many Agents. So she exhumed the money she had hidden more than ten years before. Mrs. Jamieson furnished it carefully but, oddly, rather lavishly. It was also convenient for coming home late at night after Agent hunting. Mrs. Jamieson was becoming obvious. Excitement brought color to her cheeks when she thought of Earl facing one of them—a lean, cunning jaguar facing a fat, lazy bear. It was her bloodthirsty society, living off the fat of the land. She painted the room herself, in soft, pastel colors. When it was finished she showed Earl regally into the room, making a big joke of it. Mrs. Jamieson turned to leave the room, but he stopped her. "You In the spring Mrs. Jamieson caught a virus cold which resulted in a long convalescence. Earl moved into the new bedroom. At first she thought he moved in an effort to please her because of the illness, but she soon grew aware of her mistake. One day he disappeared. Mrs. Jamieson was alarmed. Had the Agents found him? She watched the killed himself. Mrs. Jamieson dropped the paper immediately and went insane and made the raid singlehanded. Mrs. Jamieson read the account 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. his knuckles nervously. "What did you do?" she asked. Mrs. Jamieson had to sit down. Finally she was able to ask, "How did it He pointed to the paper on his desk. Mrs. Jamieson, trembling, picked 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 Mrs. Jamieson was furious. "And you believed him?" Beyond the closed door, out of sight of her son, Mrs. Jamieson gave He didn't know why—not yet—but he would. "He'll do it yet!" she whispered to the flowered wallpaper. She didn't care that no one heard her. She didn't know where the men were now, those who had killed her working on the case. She knew. She had found a gun in Earl's desk. She took the paper into Earl's room. "Did you do this?" He turned away from her. "It doesn't matter whether I did or not. They "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 Mrs. Jamieson's face colored, then drained white. Earl stunned immobile—not by the blow, but from the knowledge that she could hate so suddenly, viciously. She controlled herself. "We must find a way to leave here," she said, calmly. "They won't find us." Then Mrs. Jamieson saw him. one thought of hatred at them, but of course they did not hear her. Benjamin's hands gripped tightly. Mrs. Jamieson slowly opened her eyes.... 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. Mrs. Jamieson could not remember, before she died.

<question>:
What was Mrs. Jamieson's biggest problem in the story?

<options>:
A She did not understand the Stinson Effect
B She had to raise her son alone
C She was just able to make ends meet
D She had to hide her scar

<answer>:

A