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

<passage>:
CAPTAIN CHAOS By NELSON S. BOND The Callisto-bound we were rocketing under sealed orders, we couldn't turn back. of settlers, and most of them had good-paying jobs. Besides, we were at war with the Outer Planets, and no man in his right senses wanted to sign for a single-trip jump on a rickety old patrolship bound for colonists, asking that one of the more patriotic sons-of-riches donate So I went back to the ship. I said, "Sorry, sir. We're up against it. I The skipper scowled at me from under a corduroy brow and fumed, "But scramble us a steak or something, Skipper." when you're running the blockade—" after leaving Sand City. I read them a few minutes ago. "We are to attempt to run the Outer Planets Alliance blockade at any spot which reconnaisance determines as favorable. Our objective is Jupiter's fourth satellite, Callisto. The Solar Federation Intelligence Department has learned of a loyalist uprising on that moon. It is reported that Callisto is weary of the war, with a little prompting will secede from the Alliance and return to the Federation. "If this is true, it means we have at last found the foothold we have been seeking a salient within easy striking distance of Jupiter, capital of the Alliance government. Our task is to verify the rumor and, if it be true, make a treaty with the Callistans." I said, "Sweet howling stars—some assignment, sir! A chance to end this terrible war ... form a permanent union of the entire Solar family ... bring about a new age of prosperity and happiness." "If," Cap O'Hara reminded me, "we succeed. But it's a tough job. We can't expect to win through the enemy cordon unless our men are in top "The search," interrupted an oddly high-pitched, but not unpleasant voice, "is over. Where's the galley?" "You're willing to sign for a blind journey?" skipper's roar he glanced up at us eagerly. "Vesta!" he piped in that curiously high-pitched and mellow voice. "Loft trajectory for Vesta! Then we're trying to run the Alliance blockade, Captain?" "None of your business!" bellowed O'Hara in tones of thunderous outrage. "Get below instantly, or by the lavendar lakes of Luna I'll—" try to broach the blockade off Iris rather than Vesta. For one thing, come down to the galley for it!" ship—Captain Slops!" up the crew and told them our destination, and if you think they were hen-house and said, "The blockade! Oboyoboy! Maybe we'll tangle with one of the Alliance ships, hey?" Blinky Todd, an ordinary with highest rating, said with a sort of macabre satisfaction, "I hopes we And one of the black-gang blasters, a taciturn chap, said nothing—but the grim set of his jaw and the purposeful way he spat on his callused paws were mutely eloquent. Only one member of the crew was absent from the conclave. Our new Which we did. And whatever failings "Captain Slops" might have, he "Not only all right, Slops," wheezed Captain O'Hara, "but perfect! everything O.Q. in the galley?" away." The Old Man smiled archly. "Must have everything shipshape for a don't have aboard. After this jump is over I'll see what I can do." I said, "Hold everything, Slops! You can't do that! It's against wants the cannon for, is it, son? So I don't see any harm in rigging up the old Nolan in the galley for incineration purposes. Did you say the other hand, it might have been self-satisfaction. Whatever it was So that was that. During the night watch two men of the crew lugged "But I'm only going to use it," he said plaintively, "to dispose of "Well, don't dump your cans when there are any ships within range," I by accident, into the men's shower room and met up with a brawny young hear the wallop at the end of my tale he fled from the galley, very along at a mere 400,000 m.p.h. Which meant it would take us at least ten days, perhaps more, to reach that disputed region of space around Vesta, where the Federation outposts were sparse and the Alliance block began. boy soprano, and the meanest pirate who ever highjacked a freighter was and crew. In addition to being a most awful prude, he was a kill-joy. nine days he forced on the skipper the same gratuitous advice which before had enraged the Old Man. By sheer perseverance he earned the I was willing to give him another title, too—Captain Chaos. God knows "It's a mistake to broach the blockade at Vesta," he argued over and extreme danger of encountering enemy ships?" There's a double watch on duty, and men at every gun. If we do meet up with an Alliance craft, it'll be just too bad for them! "Yes, sirree!" The Old Man grinned comfortably. "I almost hope we do bump into one. After we burn it out of the void we'll have clear sailing all the way to Callisto." "But—but if there should be more than one, sir?" "Don't be ridiculous, my boy. Why should there be?" "Well, for one thing," wrangled our pint-sized cook, "because rich because Vesta's orbit is now going into aphelion stage, which will favor a concentration of raiders." "Why—why, because—" said Slops. "Because—" most vital mission of the whole ding-busted war!" spacesled in an ionic storm, rolled, quivered and slewed like a drunk unmistakeable to any spacer who has ever hopped the blue. Our ship had Bramble were in the turret, and they were both good sailors. They knew been assaulted, the ship bucked and slithered again, this time with the hastily converted into an all-way, inter-ship communicating unit, came a jumble of voices. A call for Captain O'Hara to "Come to the bridge, from the fore-gunnery port as a crew went into action ... a voice of the Alliance commander. "Ahoy the Leo ! Calling the captain of the Leo the Leo answering. What do you want?" "Stand by to admit a boarding party, Captain. It is futile to resist. You are surrounded by six armed craft, and your vessel is locked in our tensiles. Any further effort to make combat will bring about your immediate destruction!" 'em, Skipper! Let's fight it out!" And elsewhere on the impetuous. I turned on the little idiot vituperatively. "Shut up, you fool! Don't you realize there's not a thing we can do but always a chance one of us may get away, bring help. We have a mission "But—but if they take us prisoners," he questioned fearfully, "what will they do with us?" "And the Leo ?" "Who knows? Maybe they'll send it to Jupiter with a prize crew in command." "That's what I thought. But they mustn't be allowed to do that. We're marked with the Federation tricolor!" A sharp retort trembled on the tip of my tongue, but I never uttered it. Indeed, I swallowed it as comprehension dawned. There came to me The skipper got it, too. His jaw dropped. He said, "Heaven help us, it's the truth! To reach Jupiter you've got to pass Callisto. If the Callistans saw a Federation vessel, they'd send out an emissary to greet it. Our secret would be discovered, Callisto occupied by the enemy...." fight even though it meant suicide for all of us. But it was too late. Already our lock had opened to the attackers and the Alliance commandant stood smiling triumphantly before us.

<question>:
Why did the alliance want to capture the ship?

<options>:
A to strengthen the blockade near Vesta
B to take prisoners
C to have a way into the loyalist camp
D to join the federation

<answer>:

C