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

<passage>:
fight for a race of which they had never heard. Ro moved cautiously. He knew the jungles of Mars well, knew the Ro was returning from the north. He had seen the great villages of trot. There was no need for caution now. The dangers on the plain were few. The sun beat down on his bare head and back. His red skin glistened. For a long moment Ro studied the approaching creatures. Then he gasped in surprise. The pursued was a young woman, a woman he knew. Na! The Ro exclaimed his surprise, then his rage. His handsome face was grim as he searched the ground with his eyes. When he found what he sought—a on his prey to notice Ro at first, and when he did, it was too late. the red men's arms. Despite his frantic contortions, the stone caught him in the side. His ribs and backbone cracked under the blow. He was dead before he struck the ground. With hardly a glance at his fallen foe, Ro ran on to meet the girl. She "You were alone in the woods!" Ro exclaimed. "Since when do the women "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. They made signs of peace—with one hand only, for they carried stones. Then the white men spoke but their tongue was strange, and our men signaled that they could not understand. The white men smiled, and 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. Ro groaned aloud as Na finished her tale. His homecoming was a meeting with tragedy, instead of a joyful occasion. "What of my father?" he asked hopefully. "He was a great warrior. Surely he didn't fall to the Oan?" "He had no chance to fight," Na answered. "Two of your brothers died with him on that first morning." Ro squared his shoulders and set his jaw. He wiped a hint of tears from "Then there will be more to kill," answered Ro without turning. "And the white ones, as well. They probably keep them alive to repair Na smiled. Ro was angry, but anger did not make him blind. He would "All men will know now that you are the mate of Ro," he whispered. And The climb was long and dangerous. Ro's skin glistened with sweat. the far side he would find the white ones. He took the stone from his guard. He was coming straight at Ro. The young Martian shrank back. "The rat men have eyes to cut the night." It was a memory of his mother's voice. She had spoken those words when he was a child, to keep him from straying too far. Like a phantom, Ro arose from his crouch. The rat man was startled, frozen with fear. Ro drove his right arm around. The stone in his hand cracked the Oan's skull like an eggshell. Ro caught the body as it Breathing more easily, Ro moved on. He reached the edge of the small feigned sleep. In the dusk he appeared no different than the others. His chest was scratched in a thousand places when he reached the far side, but he felt no pain. His heart was singing within him. His job "Be still," he thought. He remembered Na's words: ' We spoke with our thoughts. weight of his brain. An urgent message to hurry—hurry reached him. It was as though he was feeling Ro was more confident as he moved to untie the others. He worked more When they were ready, Ro signaled the four white people to follow him. something to one of the men. Ro turned and glared at her through the "She is the one I have chosen for my mate," Ro answered. Finally the man with the silver hair asked, "Why did you risk your life to rescue us?" "With your help I will avenge the death of my father and brothers and Ro's body tensed and quivered. A low growl issued from deep in his Ro struck his foe head on. They went down in a frenzied bundle of fury. The rat man's tail lashed out to twist around Ro's neck. With frantic strength, Ro tore it away before it could tighten. fists into his soft stomach. Suddenly shifting his attack, Ro wrapped air that would give it life. But Ro's hands were bands of steel, Ro dismounted the limp body. His face wore a wildly triumphant smiled as she recognized Ro. The young Martian breathed a sigh of Ro gathered the girl in his arms. He spoke softly to her to help her When she had recovered from her shock, the small group traveled on. Ro "But there are only six of us," one of the white men protested. "There are hundreds of the beasts. We wouldn't have a chance." Ro smiled. pure white. They were handsome, Ro thought, in a barbaric sort of way. and less impressive. Ro then centered his attention on the girl. Her from? And how is it that you can speak and cause others to speak with their minds?" It was the old man who answered. Ro introduced himself and Na. Ro sighed. Ro awakened with the dawn. He was startled to find that Na had left his "You will make no mate at all," Ro said sternly, "and there will be no He glared at her for a moment, then smiled and helped her with her burden. The others in the cave awakened. Ro noticed that Charlotte had slept Ro smiled. These young white men were no different than Martians where and spoke. It was Carlson who asked, "How do you expect the six of us to attack the rat men?" "The Oan are cowards," Ro answered. "They are brave only because they in this wilderness we have sticks and stones to work with." Ro sprang to his feet to tower above the man. His handsome face was twisted in anger. "You're lying," he shouted aloud, forgetting that the white man couldn't understand his words. "You're lying because you are afraid. You refuse to help me avenge my people because you are more of a coward than the Oan." Grimm climbed to his feet and backed away. Ro advanced on him, his fists clenched. 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. Ro turned quickly. Ro fell silent. He walked to the mouth of the cave and stared out. When He repeated his plan to the others. "But they'll kill her," gasped Charlotte. "She will be a woman alone," said Ro. "The Oan prefer to capture women Ro laughed. "Why me?" Grimm demanded. "Why not Carlson? Or are you saving him for Gritting his teeth, Carlson charged at Grimm. But Ro moved more swiftly. He caught the white man and forced him back. "This is no time for fighting," he said. "When the Oan are defeated you "Okay," he sneered. "I'll go with the red man. But when we meet again, When they had detailed their plan, the party left the cave. Ro led them "We leave you here," said Ro to the professor. "Na will lead you to the Ro looked at Na for a long moment before they parted. He grew very Carlson seemed to come out of a trance. He swung around to trail Ro up When they had reached the top, he and Carlson set to work piling rocks "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?" Carlson straightened. He weighed Ro's words before answering. Finally he said, "I didn't want to make trouble. It was a bad time, and Ro seemed puzzled, then he laughed. Ro didn't speak. He didn't concentrate and transmit his thoughts, but kept them to himself. The pictures he'd received from Carlson were confusing. The business at hand was more grim and important than untangling the puzzle.

<question>:
Why did Ro want to fight the white man?

<options>:
A He had weapons on the ship
B He had a ray gun
C He had sticks and stones
D He thought he was being dishonest when he said he couldn't help

<answer>:

D