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

<passage>:
Conspiracy on Callisto Revolt was flaring on Callisto, and Peter Duane held the secret that would make the uprising a success or failure. Yet he could make no move, could favor no side—his memory was gone—he didn't know for whom he fought. work for myself. When we land on Callisto tonight I'll be with you when my fair share of the proceeds. That's as far as it goes. I take no orders from him." "Just take your ten thousand and let it go at that. Don't make trouble. Leave Andrias out of our private argument." "Damn you!" Duane flared. "I was promised fifty thousand. I need that money. Do you think—" don't care about fairness, Duane, except to myself. I've done all the work on this—I've supplied the goods. My price is set, a hundred thousand Earth dollars. What Andrias promised you is no concern of mine. The fact is that, after I've taken my share, there's only ten thousand left. That's all you get!" have to kill you!" swept up and pinioned Duane, holding him impotent. "Don't be a fool," he grated. "Duane—" will you listen to reason?" Duane panted. But he halted, and the warning every soul on it to take shelter, to strap themselves in their pressure bunks against the deadly stress of acceleration as the ship But the two men had not heeded. stimulant, to help you throw off the shock of your—accident. You're all right, otherwise." the way so permanently. Well, no matter. If you had to kill him, it's no skin off my nose. Give me a release on the merchandise. I've got your money here." even know my own name! My head—it hurts. I can't think clearly." Andrias straightened, turned a darkly-suspicious look on Duane. "Don't play tricks on me," he said savagely. "I haven't time for them. I won't mince words with you. Give me a release on the cargo now, before I have to get rough. This is a lot more important to me than your life is." "Go to hell," Duane said shortly. "I'm playing no tricks." There was an instant's doubt in Andrias' eyes, then it flashed away. He bent closer, peered at Duane. "I almost think—" he began. bellowed. "Reed!" Two large, ugly men in field-gray uniforms, emblazoned with the shooting-star insignia of Callisto's League police, came in, looking to "Duane here is resisting arrest," Andrias said. "Take him along. We'll something against me, save it. Wait till my head clears. I'm sure I can explain—" "Explain, hell." The dark man laughed. "If I wait, this ship will be blasting off for Ganymede within two hours. I'll wait—but so will the ship. It's not going anywhere till I give it clearance. I run Callisto the memories that he should have had. Amnesia, they called it complete "Who's this man Andrias?" Duane whispered to the nearest guard. The man stared at him. "Governor Andrias," he said, "is the League's deputy on Callisto. You know—the Earth-Mars League. They put Governor Andrias here to—well, to govern for them." "League?" Duane asked, wrinkling his brow. He had heard something about a League once, yes. But it was all so nebulous.... The other guard stirred, leaned over. "Shut up," he said heavily. "You'll have plenty of chance for talking later." later, still in the barred room into which he'd been thrust. The guards had brought him there, at Andrias' order, and left him. That had been all. This was not a regular jail, Duane realized. It was more like a palace, something out of Earth's Roman-empire days, all white stone and frescoed walls. Duane wished for human companionship—particularly conjure them into stronger relief, or to exorcise them entirely. Somewhere, some time, a man had said to him, " Andrias is secretly arming the Callistan cutthroats for revolt against the League. He wants personal power—he's prepared to pay any price for it. He needs guns, Earth guns smuggled in through the League patrol. If he can wipe out the League police garrison—those who are loyal to the League, still, instead of to Andrias—he can sit back and laugh at any fleet Earth and Mars can send. Rockets are clumsy in an atmosphere. They're helpless. And if he can arm enough of Callisto's rabble, he can't be stopped. That's why he'll pay for electron rifles with their weight in gold. " keeps perpetually averted from Earth, as if the moon knows shame and wants to hide the rough and roaring dome city that nestles in one of the great craters. Duane remembered sitting in a low-ceilinged, they're perfect. You know my price. Take it or leave it. And it's payable the minute we touch ground on Callisto. They say I'm a killer ," he thought. " Apparently I'm a gun-runner as well. Good lord—what am I not? " memory as he entered. One of the ancient Earth dictators had employed just such a psychological trick to overawe those who came to beg favors of him. Muslini, or some such name. The trick failed to work. Duane had other things on his mind of his own unimportance, as steadily as he'd ever walked in the open air of his home planet. Whichever planet that was. "That," he said, "is better." He paused a moment ruminatively. "It would have been better still if you'd not stalled me so long. I find that hard to forgive in my associates." "The money," Peter said. If he were playing a part—pretending he knew what he was doing—he might as well play it to the hilt. "When do I get "Naturally," he said, "there will have to be a revision of terms. I offered a hundred and ten thousand Earth-dollars. I would have paid it—but you made me angry. You'll have to pay for that." take whatever else I want!" clenched, taut. Already the muscles of his legs were tensing. "You're ready," he repeated. "You've armed the Callistan exiles—the worst gutter scum on nine planets. You're set to betray the League that gave you power here.... Well, that changes things. I can't let you do it!" ," he thought. " I'm getting in a rut! " whole arsenal of hand guns, Callistan money by the bale, ominously had a fortune within reach at all times—and a few meaningless papers. Duane took the release he had signed and tore it to shreds. But that was only a gesture. When Andrias came to, unless Duane had managed to get away and accomplish something, the mere lack of written permission would not keep him from the rocket's lethal cargo! When Andrias came to.... He had thought of forcing Andrias himself to front for him, at gun's who lose them. Andrias' throat was speckled with the livid marks of Duane's fingers Duane's head, butting Andrias in the face, had drawn a No guard of Andrias' would have been deceived for an instant, looking at that face—even assuming that Andrias could have been forced to cooperate by the threat of a gun. Which, considering the stake Andrias He stood up and looked around. He had to act quickly. Already Andrias' Andrias now, in cold blood, with so much to gain and nothing to lose? No ," Duane thought. " Whatever they say, I'm not a killer! " he dared let neither revive until he was prepared.

<question>:
Why does Adrian think the Callistans will be willing to fight against the league?

<options>:
A Because he's threatened to imprison them.
B Because he's threatened to kill them.
C A combination of of A and C.
D Because they are the League's exiles and are of low moral character.

<answer>:

D