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

<passage>:
COMING OF THE GODS By CHESTER WHITEHORN Never had Mars seen such men as these, for they came from black space, carrying weird weapons—to and all his brothers and sisters to sit round a fire with them at the And, most of all, he wanted to see Na, graceful, dark eyed Na, whose His thick black hair shone healthily. figures. He could see the rat man plainly now—his fanged, frothy the red men's arms. "Yes, great and many. But that tale can wait. Tell me first how you came to be playing tag with the Oan." appeared." "You were alone in the woods!" Ro exclaimed. "Since when do the women of our tribe travel from the cliffs alone?" "They were strange men indeed white as the foam on water, and clothed in strange garb from the neck down, even to coverings on their feet. weapons of a sort in the other. And the men of our tribe made the stones. Then the white men spoke woman with golden hair, and the other, a man of age, with hair like silver frost. throwing. Then the white men displayed the power of their strange everywhere a red man showed himself, he cried out and died by the flame from the white men's weapons. Surely he didn't fall to the Oan?" "They have the weapons of the white ones." be white blots in the dimness. One had long, golden hair, like spun another's head was covered with a thatch like a cap of snow "They traveled through space in their 'ship,'" Na answered. "They called themselves an expedition." Ro was silent then. In a short time it would be dark enough to go down into the valley. When he had rescued the white ones, he would learn Her dark eyes seemed to sparkle and her hair shone in the twilight. He He took a pouch from his waist and shook out a gold arm band. This he good weight and would make short work of any Oan who was foolish enough to cross his path. he rested at the bottom. Feeling his way cautiously, he moved toward the camp. He could sense the presence of many Oan close by. The hair at the base of his neck prickled. He prayed he wouldn't be seen. An alarm now would spoil his Suddenly he halted. A dim figure approached. It was one of the Oan, a spring amongst them and slay them as they slept. He lay flat on his stomach and inched his way ahead. It was slow work, weight of his brain. An urgent message to hurry—hurry reached him. It was as though he was feeling Once again his mind grew light. The girl's thoughts assured him she would follow his instructions. golden-haired girl was free. Ro was more confident as he moved to untie the others. He worked more easily as each came free and he started on the next. When they were ready, Ro signaled the four white people to follow him. They rose quietly and trailed him into the woods. The girl whispered something to one of the men. Ro turned and glared at her through the them and Oan camp grew. Ro increased his pace when silence was no longer necessary. The four white people stumbled ahead more quickly. "We journey out of the valley and around the face of the cliffs," Ro "Who is Na?" asked the girl. communicating. Each was busy with his own thoughts. Finally the man with the silver hair asked, "Why did you risk your life to rescue us?" the men of my tribe." shoulders was a girl. set his twisted legs and bared his fangs. The fur on his back stood out air that would give it life. But Ro's hands were bands of steel, led them about a mile further along the base of the cliff, then up, to a cleverly concealed cave. "We will stay here," he told the others, "until we are ready to attack the Oan." He sat in a corner of the cave and leaned back against the wall. His eyes were half shut and he pretended to doze. Actually he was studying the white ones. The man with the silver hair seemed very old and weak, but very wise. The other men had hair as black as any Martian's, but their skin was pure white. They were handsome, Ro thought, in a barbaric sort of way. One was lean and determined, the other, equally determined, but stouter golden hair gleamed proudly, even in the dusk. She was very beautiful, from? And how is it that you can speak and cause others to speak with their minds?" It was the old man who answered. "We come from a place called Earth, many millions of miles away through space. My daughter, Charlotte, my two assistants, Carlson—" the lean man nodded—"Grimm—" the stouter man acknowledged the introduction—"and myself are an expedition. We came here to Mars to study." Ro introduced himself and Na. "What manner of a place is this Earth?" he asked, after the formalities. what is it like here on Mars? Surely the whole planet isn't wilderness. What year is it?" well provided for." "You will make no mate at all," Ro said sternly, "and there will be no table if you wander off. Your next meeting with the Oan may not be so fortunate." He glared at her for a moment, then smiled and helped her with her burden. When they had finished breakfast, they sat around the floor of the cave and spoke. It was Carlson who asked, "How do you expect the six of us to attack the rat men?" twisted in anger. "You're lying," he shouted aloud, forgetting that the white man The old man also rose. He placed a restraining hand on Ro's arm. "He's lying," said Ro with his thoughts. "Tell him I'm speaking the truth, professor," said Grimm aloud. The professor repeated Grimm's words with his thoughts. "It would be impossible to make new guns here," he said. "But there is another way. I have thought about it all night." "The space sphere. There are weapons on our ship that are greater than ray guns. With those we could defeat the rat men." The professor "She will be a woman alone," said Ro. "The Oan prefer to capture women when they can." "Then she'll be captured," the professor said. "It's much too risky." Ro laughed. "Do you think I will let her go alone? I will be close by. Na can lead be easy." The professor smacked his fist into his palm. "It might work at that. Grimm can go with you. Carlson and Charlotte will go with me." "Why me?" Grimm demanded. "Why not Carlson? Or are you saving him for your daughter?" swiftly. He caught the white man and forced him back. "Okay," he sneered. "I'll go with the red man. But when we meet again, it will be a different story." Carlson turned to Ro. "I'll go with you," he said. "Grimm can go with Charlotte and the professor." When they had detailed their plan, the party left the cave. Ro led them into the thickest part of the forest and toward the Oan camp. valley. It was about a hundred yards long and twenty feet wide. The walls of the cliff rose almost straight up on both sides. "We leave you here," said Ro to the professor. "Na will lead you to the sphere. She will remain hidden until you have circled away from her. Then she will reveal herself." He turned to Carlson. The young Earthman was looking at Charlotte in much the same way. "Come on," Ro said. "If we spend the rest of the morning here, the Oan will try some strategy of their own." were gone. He felt a pang of regret as he turned to move upward. When they had reached the top, he and Carlson set to work piling rocks and boulders at the edge of the cliff. They chose the point directly over the narrowest part of the valley. If all went well, the Oan would be trapped. They would die under a hailstorm of rock. "You would have liked a more tender goodbye with Charlotte," Ro said to Carlson as they worked. "Was it fear of Grimm that prevented it?" trouble completely." Carlson seemed surprised. "It wouldn't be legal. Who would perform the ceremony?" Ro seemed puzzled, then he laughed. "Last night I thought that we on Mars are backward. Now I'm not so

<question>:
Who is the man with the silver hair?

<options>:
A Carlson
B Ro
C Grimm
D the professor in charge of the expedition

<answer>:

D