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

<passage>:
HEROES By ROBERT SILVERBERG The planet itself was tough enough—barren, desolate, forbidding enough to stop the most adventurous and the next ship for Earth." desert. That's the only sport I we dump this guy I'm sacking in for twenty hours, and then we're going back out there to finish that search-pattern. Earth needs uranium, honey, and I know you'd never be happy quitting in the middle die out here on Mars is to Val. "The surest way to have left—Geig-hunting. Look out there." keep moving," I told There had been a pattern that some grease monkey back at the Dome was at fault—whoever it was who had failed to fasten down the engine of disappearances on the desert. dedicated. But they had to run head-on against a mad sand in the delicate mechanism of the atomic engine. But no genius who had a motto: "Can't we turn back now, Ron?" Val pleaded. "Maybe there isn't any uranium in this sector at all. I think we're crazy to keep on searching I thought all his kind had died at the time of the atomic wars. Death to all Terrans! madman!" you out, one by one." I heard Val sob, "He's a desolate wastes of the Martian Mars. Eventually I'll scare you all away." "Just pick us off in the desert?" "Exactly," replied Ledman. "And I have no fears of an but the mazes and gullies of this dead world. He was a cripple in a wheelchair—helpless as a rattlesnake. "Try to keep going, Val." armed attack. This place is well fortified. I've devoted since I landed here on Mars." "What are you going to do except you. You were so sick It must have been hell for her. We had wandered fruitlessly over the red sands all I found myself fervently wishing I was back out there on the infinitely safer desert. "Do I shock you?" he asked. "I shouldn't—not when Even though the Martian snapped. "Well, let me show you. You're on Mars hunting uranium, right? To mine and ship the radioactives back to Earth to keep the atomic engines going. Right?" I nodded over at our geiger much inflamed by the idea of Ledman said acidly. "How search for uranium as I was. We knew the pay was poor, but we had felt it a sort of coming to Mars to help in the "Atomics cost me my legs," he said. "You remember the Sadlerville Blast?" he asked. after?" I said, stalling, stalling. "Just what is it you're No, we had decided together to come to Mars—the foot, both of us. the contract, but I got a good dose of radiation instead. Not enough to kill me," he said. "Just enough to necessitate that meant we had found pay-dirt. I started to feel tired myself, terribly tired. I longed that sudden explosive tumult "But why kill us Geigs? We Mars, until I recalled that I "You're just in this by accident," the board of Ledman Atomics decided that a semi-basket case like myself was a poor "They renamed Ledman Atomics. Who did you say you worked for?" Mars, lost myself, built this Dome, and swore to get even. There's not a great deal of uranium on this planet, but enough to keep me in a style to which, unfortunately, I'm Mars after all. But, I reminded Poor kid , I thought. Maybe we shouldn't have come to He rolled over to a wall table and fumbled in a container among a pile of hypodermics. it seemed hard to believe that we'd exchanged Earth and all it held for us for the raw, untamed wasn't seriously worried about his threat to wipe out too nightmarish to be real. I the entire Geig Corps, since it was unlikely that one man every Earthman on Mars? Of cut me off. But Ledman Earth that couldn't be broken without much difficulty. So we volunteered. every one of you for taking away my legs! If we hadn't meddled with the atom in the first place, I'd be as tall and powerful as you, today—instead wearying journey across the empty desert. "Easy, baby," I said. I knew what our ace in the hole was. But I had to get Ledman to wipe every last one of about as easy to get out of as a spider's web is for a trapped fly. It wasn't Martians that glued-in instantly. Ledman went sprawling helplessly out wore an outmoded, bulky Ledman clawed his way to on sparsely-settled Mars. Somehow I'd missed him. What shocked me most was spacesuit ended neatly at the "Now if I could get free of this stuff," I said, "I could get him covered before he comes to. But how?" Then I turned and faced Ledman. between sane people and insane," I told him. "I'm not going to kill you at all. I'm going to see to it that you're sent back to Earth." "They'll help you on Earth. They'll take all the hatred and "I hate Earthmen," he spat that you couldn't bear to hang around on Earth for as much off for Mars without a moment's hated Earth so much you had to leave." where we were going, and why. I wondered why we had ever left Earth. The answer to that came to me quick enough: we had to. Earth needed radioactives, and the only way to get them was to get out and look. The Ledman scowled, and then great atomic wars of the late 20th Century had used up much of the supply, but the amount used to blow up half the great cities of the world I had no muscles to fit them to." "You left Earth too quickly," Val said. "It was the only way," he protested. "I had to get off—" "She's right," I told him. "The atom can take away, but it can give as well. Soon after ruined cities had been hidden by a shining new world of you left they developed They had used their atomics to make bombs. We used ours for fuel. It was an atomic world. Everything: power drills, printing presses, typewriters, you had to get away from the world you despised and come here." powered by the inexhaustible energy of the dividing atom. nuclei isn't. After three centuries of heavy consumption, the supply failed. The mighty machine that was Earth's industry But though the energy is inexhaustible, the supply of And that started the chain of events that led Val and me to end up as a madman's prisoners, on Mars. With every source of uranium mined dry on Earth, we had tried other possibilities. All sorts of time you could have been happy, useful on Earth, instead uranium from the oceans. In forty or fifty years, they'd get some results, we hoped. of being holed up here Ledman," I said. "All this Earth. But you decided to channel everything out as revenge." world we'd revert back to. Millions of starving, freezing humans tooth-and-clawing in it in the useless shell of a great atomic civilization. So, Mars. There's not much uranium on Mars, and it's not easy to find or any cinch to mine. But what little is there, Enter the Geig Corps: volunteers out on the face of Mars, combing for its uranium deposits. And here we are, I thought. gave Val the blaster and slipped out of my oxysuit. Ledman was sobbing. this was actually quite near us and fairly small. A one-man Dome, of all things! Ledman." He herded us off to Gregory Ledman the killer been out on the desert. I realized now that I had been driving and I put Ledman

<question>:
What is ironic about Ledman's quick departure to Mars?

<options>:
A Victims of the Sadlerville blast received a large settlement and were culturally recognized as heroes
B Inventors discovered a way to create prosthetics using atomic power
C In hunting Geigs, Ledman is killing the only people with the power to help him walk again
D He needs uranium in order to survive and went to a place where there is scant uranium

<answer>:

B