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

<passage>:
the U.S. copyright on this publication was renewed.] The sand-thing was powerful, lonely and strange. No doubt it was a god—but who wasn't? Stinson lay still in the sand where he fell, gloating over the success Stinson relaxed. He'd had his say. Sybtl trembled beside him. A small mammal, round, furry, hopped by, sniffing inquisitively. Sybtl said, "Is the Sand God happy?" She shook her head. "No, he is not happy. He is old, old, old. I can feel it. My people say that when one gets too old it is well to die. But Gods never die, do they? I would not like to be a God." "Stinson," the Sand God said. "You said I was adolescent. You are correct. Do you remember I told you how my people, the entire race, left their bodies at the same time? Do you imagine all of us were adults?" sand blowing in the wind? A wind devil?" "The webfoots?" "You and they shall share the planet." The Sand God disappeared. Sybtl said "Is the Sand God angry again?" "No, he is not angry." but it was composed only of grains of sand. There was no core, no "I'm glad. You will leave now?" central place you could point to and say, here is the brain, or the nervous system. But then, how could a group of loosely spaced grains of sand possibly have a nervous system? It was again going through its paces. Triangle, cube, rectangle, "Then you must know where I came from, and how." "I do not understand how. You have a body, a physical body composed of atoms. It is impossible to move a physical body from one place to another by a mere thought and a tiny instrument, yet you have done so. You deserted me out in the desert." on this planet I attempted to explain that I was not a God, but the bodies. Our technology surpassed any you have seen. The tube these webfoots use is a toy by comparison. Our scientists found the ultimate nature of physical law. They learned to separate the mind from the body. Then my people set a date. Our entire race was determined to free itself from the confines of the body. The date came." "What happened?" "I do not know. I alone exist. I have searched all the levels of time now on the pallet. The men had left her and stood in groups, talking, The woman looked at him, and she was not smiling. "Please ask the Sand God," she said, "to speak to my people again. Their fear of him does not last. When He is gone they will probably kill us." "As for the webfoots," the wind devil, or Sand God, said, "I will destroy them. You and your people will have the entire planet." entity, once existing, must not be harmed in any way. To do so changes the most basic structure of nature." The Sand God did not reply. The great bodiless, directionless voice was silent, and Stinson felt as if he had been taken from some high place and set down in a dark canyon. The cone of sand was the color of wood ashes. It pulsed erratically, like a great heart missing a beat now and then. The web-footed people milled about restlessly. The woman's eyes pleaded. When he looked back, the Sand God was gone. Instantly a new note rose in the cavern. The murmur of unmistakable mob fury ran over the webfoots. Several of the men approached the woman "And because of me even those in the cavern have disowned you." Suddenly she stiffened beside him. There, directly in their path, stood the Sand God. It was blood red now. It pulsed violently. The great voice burst forth. "Leave the woman!" it demanded angrily. "The webfoots are nearing your they will kill you." Stinson shook his head. The Sand God pulsed more violently than before. Ice melted in a wide area around it. Brown, frozen grass burned to ashes. "You will allow them to kill you, just to defend her life? What primitive logic long before it reached your level of development." "Yes," Stinson said, "and your race no longer exists." The Sand God became a sphere of blue flame. A wave of intense heat drove them backward. "Earthman," the great voice said, "go back to your Earth. Take your inconsistencies with you. Do not come here again to the thunder of its passing shook the ground and echoed among the lonely hills. Sybtl shivered against his arm. "The Sand God is angry," she said. "My people tell how he was angry once before, when we first came here. He killed half of us and burned the ship that brought us. That is how Kaatr got the tube-weapon. It was the only thing the Sand God didn't burn, that and the skirts. Then, when he had burned the ship, the Sand God went to the sixth planet and burned two of the largest cities, as a warning that no more of us must come here." Well, Stinson said to himself, that does it. We are better off on Earth. We can't fight a monster like him. Sybtl touched his arm. "Why did the Sand God come? He did not speak." "He spoke to me." "I did not hear." "Then he will kill you." She touched her fingers on his face. "I am sorry. It was all for me." "Don't worry. The Sand God travels without a ship, why shouldn't I?" "Now?" "As soon as you are safe. Come." Steam rose from the burned area, charred like a rocket launching pit. They stepped around it carefully. Stinson felt warm air, but there was no time, now, to warm cold feet or dwell on the vagaries of Sand Gods. Together they crossed the narrow valley. Sybtl led him toward a tall had heard, or felt the sound for some time, that now its frequency was in an audible range. "The Sand God," Sybtl said. "Sometimes he plays among the clouds. He makes it rain in a dry summer, or sometimes warms the whole world for days at a time in winter, so the snow melts and the grass begins least he does this when he plays. Who knows what he will do when he's angry?" "The Sand God isn't doing this," Stinson said. "It's only a storm." She covered his lips with her fingers. "Don't say that. He may hear you Sybtl shook her head and stroked his face with her long, slim fingers. "Poor little God-with-fingers-on-his-feet," she said. "You do not understand. The Sand God is terrible, even when he plays. See the "I'll be back." He disappeared at once, giving her no chance to object again, and went to the desert of sand, where he had first arrived on the planet. He wanted to see if the storm were world-wide. Stinson had never been in a sand storm before, even on Earth. He could of sand shot into his eyes. Clouds of sand howled around him. He fell, emerged from the cave. There was no longer a question of attack from the webfoots, the storm had taken care of that. The fierce sun began its work of drying rocks "The Sand God is tired," Sybtl said. "He is not angry now. I'm glad. Perhaps he will let you stay." "No. Even if he allowed it, I couldn't stay. My people could never live The bird's twitter stopped abruptly. "Earthman," the Sand God said, as if he were about to make a statement. Stinson ignored him. He glanced down at Sybtl, who sensed that this was a time for good-bys. He thought, perhaps I can stay here alone with her. The webfoots might find us, or the Sand God might destroy us in one of his fits, but it might be worth it. "Don't go," she said. "Not yet."

<question>:
What happened to the Sand God's race?

<options>:
A The Sand God's race moved to the sixth planet and left him behind.
B The Sand God burned them all.
C The webfoots killed the Sand God's race. He left his body to escape death.
D The Sand God's race learned how to separate the mind from the body. They set a date to leave their bodies together. The Sand God found himself alone after the experience.

<answer>:

D