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

<passage>:
"Go back? The planet itself was tough enough—barren, desolate, forbidding enough to stop the most adventurous and like you, out on the desert. That's the only sport I have left—Geig-hunting. Look and quitting you can find yourself another wife! After out there." die out here on Mars is to Val. "The surest way to keep moving," I told close to the truth. Now I in for twenty hours, and then we're going back out there to finish that search-pattern. against the redness of the sands. They were the dried, parched skeletons of Earthmen. ship the radioactives back to point, because Val didn't lie once oxymasks and suits, still we chalked it off as occupational hazards. 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 hood. Nothing but what had of disappearances on the desert. Why? counters. I'd just praised his house-keeping. "Because I hate you," he said blandly. "I intend Ron?" Val pleaded. "Maybe to wipe every last one of you out, one by one." "We volunteered to come to other Geigs I caught unawares, Go back? When Val's tired and overwrought "No," Ledman said evenly. "I'm quite sane, believe me. But I'm determined to drive the Geigs—and UranCo—off Mars. Eventually I'll scare If you think I'm backing down now "Just pick us off in the desert?" but the mazes and gullies of this dead world. He was a cripple in a wheelchair—helpless as a rattlesnake. doing this for Earth. We're heroes." She glared at me. "Heroes, for you. Almost." Mars." "What are you going to do "Just what is it you're "We didn't come out here for the pay, Val." "I know, I know, but just the same—" we dump this guy I'm sacking for their constant undercurrent of meaningless noises. Even though the Martian Earth that couldn't be broken her lovely but unrugged legs. "Heroes," she said bitterly. "We're not heroes—we're suckers! Why did I ever let You're on Mars hunting uranium, you volunteer for the Geig Corps and drag me along?" Earth to keep the atomic engines going. Right?" Which wasn't anywhere unless she was so exhausted she didn't know what she was Mars," Val said irrelevantly. right? To mine and coming to Mars to help in the search for uranium as I was. We knew the pay was poor, but we had felt it a sort of obligation, something we could do as individuals to keep the industries of radioactives-starved doing. She had been just as much inflamed by the idea of foot, both of us. No, we had decided together to come to Mars—the way we decided together on everything. Now she was Earth going. clung to them. figure propped up against I was there to sign a new contract for my company. You know who I am, now?" that meant we had found pay-dirt. I started to feel tired "Just enough to necessitate the removal of—" he indicated the empty space at his myself, terribly tired. I longed I still didn't understand. "But why kill us Geigs? We had nothing to do with it." up with the idea before I did. I wished there was some way of turning the weary, bedraggled Mars, until I recalled that I the Val who had so enthusiastically decided that a semi-basket case like myself was a poor the Geigs. Twelve steps later, I decided "You're just in this by accident," girl at my side back into Ron?" Val asked sleepily. "Don't bother. A more inventive title than Ledman Atomics, but not quite as 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 myself, someone had to do the job. A second thought appeared, but I squelched it: struggle that was Mars. But I knew I'd do it again, if I had the chance. It's because wanted to keep them. Which took a little work. Time to get moving. The Geig Corps preferred married couples, working in teams. That's what had finally decided it for us—we were a "Yes! I'll get even with every one of you for taking away my legs! If we hadn't we volunteered. first place, I'd be as tall and powerful as you, today—instead of a useless cripple in a And here we are. I glanced at the suit-chronometer. Getting late. I decided "You've conceived an impossible scheme of revenge and now you're taking it out on once again to wake Val. wheelchair." "Why don't you do something? What are you waiting for, Ron?" bound in thin, tough, plastic tangle-cord, swathed from to turn you loose outside, right after—" " about as easy to get out of as a spider's web is for a trapped fly. It wasn't Martians that chin to boot-bottoms, my any Martians, hadn't been for had done it. There weren't what was wrong with Val. there's no sense in on sparsely-settled Mars. to. But how?" "Teamwork," Val said. She swivelled around on the floor to make trouble." Val and I bound against the sides of our oxysuits. "Walk," the stranger said, waving the tanglegun to indicate "What's going on, Ron?" that you couldn't bear to hang around on Earth for as much off for Mars without a moment's to leave." "Why are you telling all why. I wondered why we had "Because if you'd stayed long enough, you'd have used some of your pension money The answer to that came to me quick enough: we had to. to buy yourself a pair of prosthetic ever left Earth. this to me?" legs, and then you paralyzed below the waist. That I'd never walk again, even with prosthetic legs, because I had no muscles to fit them to." "You left Earth too quickly," again. "They told me I was "It was the only way," he protested. "I had to get off—" "She's right," I told him. given the necessary replacement limbs free of charge. All except you. You were so sick you had to get away from the world you despised and come here." But though the energy is inexhaustible, the supply of nuclei isn't. After three centuries of heavy consumption, the supply failed. The mighty machine that was Earth's industry had started to slow down. for a moment I almost felt of events that led Val and me to end up as a madman's prisoners, on Mars. With every source of uranium mined dry sorry for him, a pathetic legless And that started the chain time you could have been happy, useful on Earth, instead of being holed up here nursing your hatred. You Earth needed radioactives, Earth. But you decided to might have been useful, on channel everything out as revenge." and the only way to get them 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. was to get out and look. The So, Mars. There's not much easy to find or any cinch to mine. But what little is there, helps. It's a stopgap effort, just to keep things moving until Project Sea-Dredge starts functioning. Enter the Geig Corps: volunteers out on the face of Mars, combing for its uranium over?" "Yes—human legs aren't strong enough to break tangle-cord wouldn't need this wheelchair." legs. The almost soundless purr of their motors was the gave Val the blaster and slipped without much difficulty. So

<question>:
Why did Val and Ron really decide to go to Mars?

<options>:
A They were curious and wanted to help their planet
B They did not want to spend anymore time on earth
C They wanted a more creative way to make money
D Out of obligation to find a job to sustain themselves

<answer>:

A