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

<passage>:
He was the man of two planets, drawn through the blackness of space to save a nation from ruthless invaders. He was Yandro, the Stranger of the Prophecy—and he found that he was destined to fight both sides. You lie upon the world Dondromogon. knuckled dust from my eyes. "How did I get here?" I demanded of the speaker. "It was ordered—by the Masters of the Worlds—that you should be brought from your own home planet, called Earth in the System of the star called Sun. Do you remember Earth?" Dondromogon." worlds away, for a specified purpose here on whatever windswept planet Dondromogon might be. "Birth and beginning—destined leadership—" Fantastic! And yet, for all I could say to the contrary, unvarnishedly "Dondromogon?" I mumbled. "The name is strange to me." "Around a star it spins, light-years away from the world of your birth. One face of Dondromogon ever looks to the light and heat, wherefore its metals run in glowing seas. The other face is ever away in cold darkness, with its air freezing into solid chunks. But because Dondromogon wavers on its axis, there are two lunes of its surface My eyes were tight shut against the dust, but they saw in imagination such a planet—one-half incandescent, one-half pitchy black. From pole to pole on opposite sides ran the two twilight zones, widest at the equators like the outer rind of two slices of melon. Of course, such areas, between the hot and cold hemispheres, would be buffeted by mighty gales ... the voice was to be heard again: "War is fought between the two strips of habitable ground. War, unceasing, bitter, with no quarter asked, given or expected. Dondromogon was found and settled long ago, by adventurers from afar. Now come invaders, to reap the benefits of discovery and toil." A pause. "You find that thought unpleasant? You wish to right that ." The voice became grand. "Suffice it that you were needed, and that the time was ripe. There is a proper time, like a proper place, for each thing and each happening. Now, go to your destiny." called Dondromogon, what manner of intelligent life bade defiance to heat and cold and storm, and built these stout structures, and now laid My first glance showed me that my companions were creatures like myself—two-legged, fair-skinned men, shorter and slighter than I, but its owner's unprotected face. seemed plastic in form, but hardened so quickly upon contact with the The challenge was clear, rich, authoritative. Someone else had come, from a rearward door into the stone-walled vestibule where the beyond. It was lighted by small, brilliant bulbs at regular intervals. Beyond, it gave into several passages. She chose one of them and have seen who are heavier than you, but none taller. Whence came you?" I remembered the strange voice that had instructed me. "I am from a far world," I replied. "It is called—yes, Earth. Beyond that, I know "What proof have I?" I demanded. "On this world of yours—Dondromogon, isn't it called?—I'm no more than an hour old. Accident or shock probably can tell what happened to put me in such a condition." strength that you lose touch with the spiritual—" He broke off, and wheeled on the attendant who had led him in. "To my study," he commanded. "On the shelf behind my desk, bring the great of Dondromogon, and would take our side as well. We defend ourselves defeat and crush them utterly!" foolish, but it had its effect. "Follow me, deign to follow me," Sporr said. "Your clothing, your quarters, your destiny, all await you." upon a metal-plated platform. Standing beside me, he tinkered with a lever. We dropped smoothly away into a dark corridor, past level after level of light and sound. "Our cities are below ground," he quavered. "Whipped by winds above, we must scrabble in the depths for life's necessities—chemicals to transmute into food, to weave into clothing, to weld into tools and weapons—" The mention of food brought to me the thought that I was hungry. I said as much, even as our elevator platform came to the lowest level and stopped. "Behold!" he said, with a dramatic gesture. "Your garments, even as they have been preserved against your coming!" It was a sleeping chamber, with a cot made fast to the wall, a metal locker or cupboard, with a glass door through which showed the garments neck. The only fitted articles were a pair of shoes, metal-soled and soft-uppered, that went on well enough and ran cross-garters up to "I serve Yandro," she vowed tremulously. "Now and forever—and happy that I was fated to live when he returned for the rescue of all Dondromogon." It seemed to me then that the corridors were vast and mixed as a labyrinth, but Doriza guided me without the slightest hesitation past one tangled crossway after another. My questions she answered with a mixture of awe and brightness. "It is necessary that we live like this," she explained. "The hot air of Dondromogon's sunlit face is ever rising, and the cold air from the dark side comes rushing under to fill the vacuum. Naturally, our strip of twilight country is never free of winds too high and fierce to fight. No crops can grow outside, no domestic animals flourish. We must pen ourselves away from the sky and soil, with stout walls and heavy sunken parapets. Our deep mines afford every element for necessities of life." I looked at my garments, and hers. There were various kinds of fabric, which I now saw plainly to be synthetic. "The other side, where those you call the Newcomers dwell and fight," I reminded. "Is it also windswept? Why can two people not join forces and face toil and nature together? They should fight, not each other, but the elements." Doriza had no answer that time, but Sporr spoke up behind us: "Great Yandro is wise as well as powerful. But the Newcomers do not want to help, not even to conquer. They want to obliterate us. There is nothing to do—not for lifetimes—but to fight them back at the two poles." We came to a main corridor. It had a line of armed guards, but no pedestrians or vehicles, though I thought I caught a murmur of far-off "Doriza, gentlewoman of the guard, conducts Yandro, the Conquering were all men but two, and wore robes of black, plum-purple or red. At sight of me, they rose together, most respectfully. They looked at me, subsequent action, of stupidity. But they were not pleasant. Their enough, but somehow unwholesome Doriza—no, she was not like these others, who may have lived too long in their earth-buried shelters. And "Yandro, folk of the Council! He deigns to give you audience." Yandro! "The tenth part of the wonders which concern mighty Yandro have not "You honor me," I told him. "Yet I still know little. It seems that I am expected to aid and lead and save the people of this world called Dondromogon. But I must know them before I can help."

<question>:
How do people live on Dondromogon? What is an example of a repercussion its people suffer as a result of its extreme temperatures?

<options>:
A They have to battle the extreme heat and extreme cold. Because of these intense temperatures people suffer, wars often start out of general agitation.
B The live deep in the ground. They can only survive above ground for a short period, so they have to find what they need and quickly bring it back underground.
C The live deep in the ground. They have to find all necessities for life, such as food, deep within the mines they dug to survive.
D They live in a great temple, exactly on the twilight line between the light and dark side of their planet. They have to find all necessities for life inside.

<answer>:

C