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

<passage>:
weren't afraid of them, were you?" "No, sir. No, because...." Extrone was smiling innocently. "Good. I want you to do something for me." Extrone smiled, almost pointed teeth showing through the beard. "I'm glad we won't have to cross the ridge." "We'll pitch camp right here, then," Extrone said. "We'll go after it tomorrow." He looked at the sky. "Have the bearers hurry." "Yes, sir." party as guides. Once more, Ri addressed the bearers, "Be quick, now!" Mia glanced nervously over his shoulder. "It's that damned pilot's sir, it wouldn't matter, because he said he ought to kill you. I wouldn't...." Extrone said, "Which one is he?" "That one. Right over there." want to use me, sir. Not after I told you.... Please, sir. If anything should happen to me.... Please, sir. Don't do it." else?" Mia looked at his companion. He spat. "What hurts most, he pays us for it. I could buy half this planet, and he makes me his guide—at less than I pay my secretary." "Well, anyway, we won't have to cross that ridge." "Hey, you!" Extrone called. "Tie it," Extrone ordered. They were at the watering hole—Extrone, Lin, two bearers, and Ri. "No, sir. Please. Oh, please professional guides. "He'll want the bearers to hack a path for him," Mia said. "But we go weren't guides. We didn't notice it so "The ones who discovered the farn beasts in the first place?" Mia "So?" Ri said. "But who are they?" It was Mia's turn to shrug. "Whoever they were, they couldn't have been Extrone dug his boot cleats into the tree, braced himself. "I like this. There's more excitement in waiting like this than in anything I know." Extrone we'd hunted this area." "I didn't think a Club pilot would do that." "After Extrone said he'd hunt farn beasts, even if it meant going to the alien system? Listen, you don't know.... Wait a minute." "You understand?" Extrone said. "How it is to wait, knowing in just a minute something is going to come out of the forest, and you're going to kill it?" "Hey!" Extrone shouted. "You, down there. There are two coming. Now let's hear you really scream!" Mia said, "I hope you're right." They stood side by side, studying the "There's a lot of satisfaction in fooling them, too," Extrone said. "Making them come to your bait, where you can get at them." He For food. For safety." "No," Extrone argued. "People should hunt for the love of hunting." "Killing?" "Hunting," Extrone repeated harshly. Extrone sat on an upholstered stool before his tent and spat disgustedly and combed his beard with his blunt fingers. Shortly, from the direction of the rocket, a group of four high-ranking the officers, with military discipline holding their waists in and knees almost stiff. "What in hell do you want?" Extrone asked. They stopped a respectful distance away. "Sir...." one began. a few hours ago, off this very planet, sir." Extrone's face looked much too innocent. "How did it get there, gentlemen? Why wasn't it destroyed?" "We lost it again, sir. Temporarily, sir." "So?" Extrone mocked. "We thought you ought to return to a safer planet, sir. Until we could locate and destroy it." "Watch! Watch!" Extrone cried gleefully. And then the aliens sprang their trap. didn't you?" "Yes, sir. When we located it, sir." "You'll destroy this one, too," Extrone said. Extrone said, "To begin with, they probably don't even know I'm here. And they probably couldn't hit this area if they did know. And you can't afford to let them get a shot at me, anyway." Extrone plucked at his right ear lobe, half closing his eyes. "You'll lose a fleet before you'll dare let anything happen to me, gentlemen. Ri obeyed the order. "Oh?" Extrone questioned mildly. "I wouldn't say that. I understand that the aliens hunt them quite extensively ... on some of their planets." "Yes," Extrone said, "I imagine they are. It would have been a shame if you had killed the last one. Don't you think so?" Extrone pursed his lips. "It wouldn't have been very considerate of you to—But, still, you gained valuable experience. I'm glad you agreed to come along as my guide." "It was an honor, sir." Extrone's lip twisted in wry amusement. "If I had waited until it was safe for me to hunt on an alien planet, I would not have been able to find such an illustrious guide." "Of course," Extrone said dryly. "Like all of my subjects," he waved his hand in a broad gesture, "the highest as well as the lowest slave, know me and love me. I know your intentions were the best." Extrone bent forward. " Know me and love me." "No?" Mia challenged. "Couldn't we? Not today, but what about tomorrow? preparing for this for a long time. From the first, maybe. That's why Extrone cut off our trade with the aliens. Partly to keep them from learning that he was getting ready to invade them, but more to keep them from exposing and a drinking mug. Extrone ate hugely, with none of the delicacy sometimes affected in his conversational gestures. When he had finished, he washed his mouth with water and spat on the ground. guides? It occurred to me when I got up. They would have spat on me, Instantly alert, Extrone said, "Get the bearers! Have some of them cut a path through that damn thicket! And tell those two businessmen to get the hell over here!" tree trunks, sometimes far, sometimes near. Extrone carried the only weapon, slung easily over his shoulder, a powerful blast rifle, capable of piercing medium armor in sustained Extrone's satisfied chuckle, in a burst of blood and fur. When the sun stood high and heat exhaustion made the near-naked bearers slump, Extrone permitted a rest. While waiting for the march to resume, reflectively, the blast rifle, lying across his legs. "For you, sir," the communications man said, interrupting his reverie. "Damn," Extrone muttered. His face twisted in anger. "It better be bearer twiddled the dials. "Extrone. Eh?... Oh, you got their ship. Well, why in hell bother me?... All right, so they found out I was here. You got them, didn't you?" "Blasted them right out of space," the voice crackled excitedly. "Right in the middle of a radio broadcast, sir." "I don't want to listen to your gabbling when I'm hunting!" Extrone tore off the head-set and handed it to the bearer. "If they call back, find out what they want, first. I don't want to be bothered unless it's "Yes, sir." Extrone squinted up at the sun his eyes crinkled under the glare, and perspiration stood in little droplets on the back of his hands. Extrone laughed. "This is enough." He gestured with the rifle and stood up. "Yes?" "Look," Extrone said. "If that's the case, why do we bother tracking them? Why not make them come to us?"

<question>:
Why are Ri and Mia the guides?

<options>:
A they're part of Extrone's Hunting Club
B they're the best guides around
C they have experience with the beasts
D they needed the money Extrone was going to pay them

<answer>:

C