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

<passage>:
END AS A HERO By KEITH LAUMER Illustrated by SCHELLING Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Granthan's mission was the most vital of the war. It would mean instant victory—but for whom? I The man who had supplied the outfit was still asleep. I figured I'd done him a favor by taking it. I couldn't hope to pass for a In the dream I was swimming in a river of white fire and the dream went I tried to move to get away from the flames, and then the real pain hit me. I tried to go back to sleep and the relative comfort of the river of fire, but it was no go. For better or worse, I was alive and conscious. I opened my eyes and took a look around. I was on the floor next to "I'm a tourist," I said. "They told me before I left home not to miss installs in seldom-used lifeboats. There were three more couches, but no one in them. I tried to sit up. It wasn't easy but, by applying a lot more will-power than should be required of a sick man, I made it. cracks where the crisped upper layers had burst.... There was a first-aid cabinet across the compartment from me. I tissue from pulling up and crippling me. The steady pressure as the truss contracted wasn't anything to do a sense-tape on for replaying at leisure moments, but at least the cabinet hadn't amputated. I wasn't complaining. As far as I knew, I was the first recorded survivor of contact with the Gool—if I survived. I was still a long way from home, and I hadn't yet checked on the work. I fumbled my way into a couch and tried to think. In my condition—with a broken leg and third-degree burns, plus a fractured skull—I shouldn't have been able to fall out of bed, much less make the trip from Belshazzar's running on a broken femur, handling heavy levers with charred fingers and thinking with a cracked head were overdoing it. Still, I was "Granthan!" he burst out. "Where are the others? What happened out there?" I turned him down to a mutter. Belshazzar was sabotaged. So was Gilgamesh —I think. I got out. I lost a little skin, but the aid cabinet has the case in hand. Tell the Kayle was talking. "—your report. I won't mince words. They're wondering at your role in the disaster. How does it happen that you alone survived?" "How the hell do I know?" I yelled—or croaked. But Kayle's voice was droning on: possible for them to subvert a loyal man without his knowledge. You've told me yourself that you blacked out during the attack—and came to on the lifeboat, with no recollection of how you got there. "This is war, Granthan. War against a vicious enemy who strike without "I'm sorry, Granthan. I can't let you land on Earth. I can't accept II I tried to gather my wits and think my way through the situation. I was alone and injured, aboard a lifeboat that would be the focus of a converging flight of missiles as soon as I approached within battery range of Earth. I had gotten clear of the Gool, but I wouldn't survive I wasn't, of course. I was still the same Peter Granthan, wasn't just any casualty. I had been trained in the subtleties of the mind—and I had been prepared for just such an attack. Now was the time to make use of that training. It had given me one what had happened. control compartment toward the escape hatch. Fire leaped up, blocking the way. I went on, felt ghostly flames whipping at me—and then the hatch was open and I pulled myself through, forcing the broken leg. My blackened hand fumbled at the locking wheel. Then the blast as the lifeboat leaped clear of the disintegrating dreadnought—and the world-ending impact as I fell. At a level far below the conscious, the embattled pseudo-personality lashed out again—fighting the invader. the last filament of your life-force! " beyond belief in endless profusion. No longer would the Gool tribe The Gool had evolved a plan—but they'd had a stroke of bad luck. perhaps, to wreck a ship, but not the complete control needed to send a man back to Earth under Gool compulsion, to carry out complex sabotage. Then they had found me, alone, a sole survivor, free from the clutter of the other mind-fields. It had been their misfortune to pick a psychodynamicist. Instead of gaining a patient slave, they had opened "I don't understand that psychodynamics jargon, Granthan," he snapped. The shrilling of the proximity alarm blasted through the silence. For a wild moment I thought Kayle had beaten me to the punch then I realized "Four-oh-two, sheer off there! You're not cleared for re-entry!" over, buffeting me against the restraining harness. I hauled at the release lever, felt a long moment of giddy disorientation as the escape capsule separated from the sinking lifeboat deep under the surface. Then my escape capsule was bobbing on the water. I would have to risk calling Kayle now—but by voluntarily giving my position away, I should convince him I was still on our side—and I was Kayle's face appeared. "Don't fight it, Granthan," he croaked. "You penetrated the planetary defenses—God knows how. I—" "Later," I snapped. "How about calling off your dogs now? And send Granthan." "I'm sorry, Granthan," Kayle said. "It's too late—even if I could "Mr. Granthan, I am General Titus. On behalf of your country, and in the name of the President—who has been apprised of this tragic situation—it is my privilege to inform you that you will be awarded the Congressional Medal of Honor—posthumously—for your heroic effort. Although you failed, and have in fact been forced, against your will, to carry out the schemes of the inhuman enemy, this in no way detracts from your gallant attempt. Mr. Granthan, I salute you." "Goodbye, Granthan. Try to understand...." He turned stiffly from the plotting board, tottered to a panel to slam his hand against the destruct button. Men fell on him, dragged him back. "— fool, why did you blow it? " I dropped the contact, found another, who leaped to the panel, detonated the remainder of the flight of six missiles. Then I withdrew. I would have a few minutes' stay of execution now. I was ten miles from shore. The capsule had its own power plant. I him all right—" I reached out to his mind and struck at random. The light fell, went out, and I heard the unconscious body slam to the ground like a poled steer. It was easy—if I could only stay awake. it from realizing how bad it was. All things considered, I felt like a badly embalmed mummy—except that I was hungry. I had been a fool not to fill my pockets when I left the escape capsule in the shallows off Key Largo, but things had been happening too fast. I had barely made it to the fishing boat, whose owner I had coerced into rendezvousing with me before shells started dropping around us. If the gunners on the cruiser ten miles away had had any luck, they would recognized me at a glance. I lay back, waiting for the train to slow for a town. I wasn't unduly worried—at the moment. The watchman probably hadn't convinced anyone The trainman crossed the platform, headed for the boxcar. He slid the loose door back a few inches against the slack latch, pushed the bag inside, placed the glass of water beside it, then pulled off his grimy

<question>:
Why did they not want to let Granthan go back to Earth?

<options>:
A He needed to stay out and fight the war
B He was injured very badly
C They were afraid he was being controlled by someone
D He was the only survivor of the disaster

<answer>:

C