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

<passage>:
Bucky Shannon leaned forward across the little hexagonal table. He "Kidding." Shannon put his elbows on the table and peered at me through Shannon got up. He got up slowly. I had plenty of time to see his Shannon?" Shannon put his hands down on his belt. He closed his eyes and smiled "Would you be collecting for the feed bill, or the fuel?" I shot a glance at the newcomer. He'd saved me from a beating, even if he was a lousy bill-collecter There didn't seem to be any. The little guy looked at Shannon with pale Bucky heaved the table off his lap and cursed me. "What's eating you, Jig? I'm not going to hurt him." "Shut up," I said. "Look what he's got there. Money!" The little guy looked at me. He hadn't turned a hair. "Yes," he said. Bucky Shannon got up. He grinned his pleasantest grin. "Delighted. I'm than you could see through sheet metal. I didn't like him. I didn't like him at all. But he had money. I said, "Howdy. Let's go find a booth. These Marshies make me nervous, looking like hungry cats at a mouse-hole." The little guy nodded. "Excellent idea. My name is Beamish. Simon Beamish. I wish to—ah—charter your circus." I looked at Bucky. He looked hungrier than the Marshies did. We didn't say anything until we got Beamish into a curtained booth with a fresh pitcher of thil on the table. Then I cleared my throat. "What exactly did you have in mind, Mr. Beamish?" Beamish sipped his drink, made a polite face, and put it down. "I have independent means, gentlemen. It has always been my desire to lighten the burden of life for those less fortunate...." started to get up. I kicked him under the table. "Shut up, you lug. Let Mister Beamish finish." He sat down, looking like a mean dog waiting for the postman. Beamish ignored him. He went on, quietly, remedy that. I propose to charter your circus, Mister Shannon, to make a tour of several settlements along the Tehara Belt." Bucky had relaxed. His grey-green eyes began to gleam. He started to speak, and I kicked him again. "That would be expensive, Mister Beamish," I said. "We'd have to cancel several engagements...." He looked at me. I was lying, and he knew it. But he said, The curtains were yanked back suddenly. Beamish shut up. Bucky and I see? And if she don't get happier pretty soon I ain't sure your tin-pot ship'll hold her." He pulled the curtains to and departed. Bucky Shannon groaned. Beamish "Yeah. She's kind of temperamental." Bucky took a quick drink. I finished for him. "She's the star attraction of our show, Mr. Beamish. A real blue-swamp Venusian cansin Beamish looked impressed. "A Beamish looked at me with that innocent dead pan. For a fraction of a second I thought I saw something back of his round blue eyes, and my stomach jumped like it was shot. Beamish smiled sweetly. "I'm not much of a bargainer. One hundred Universal Credits will be agreeable to me." He dragged out a roll as big as my two fists, peeled "By way of a retainer, gentleman. My attorney and I will call on you in the morning with a contract and itinerary. Good night." We said good night, trying not to drool. Beamish went away. Bucky made grab for the money, but I beat him to it. "Scram," I said. "There are guys waiting for this. Big guys with clubs. Here." I gave him a small-denomination slip I'd been holding out. "We Shannon has a good vocabulary. He used it. When he got his breath back he said suddenly, "Beamish is pulling some kind of a game." "Yeah." "It may be crooked." Shannon looked at me, kind of funny. He looked at the bulge in my tunic Bucky Shannon walked out into the glare of the light at the entrance to the roped-off space around the main lock. He was pretty steady on his feet. He waved and said, "Hiya, boys." muscle man from Jupiter, and all the other assorted geeks and kinkers and joeys that make up the usual corny carnie were doing nip-ups in the Bucky Shannon regarded them possessively, wiping blood from his nose. "They're good guys, Jig. Swell people. They stuck by me, and I've rewarded them." I said, "Sure," rather sourly. Bucky hiccoughed. "Let's go see Gertrude." Bucky Shannon lurched against me suddenly. I choked back a yell, and Gow glared at us as we came up into the lantern light. "She's gettin' "That's tough," said Bucky Shannon. His grey-green eyes looked like an Bucky Shannon sniffled again. I said irritably, "Be reasonable, Gow! Bucky Shannon began to cry. I snarled, "You'll have to snap her out of her." I took Shannon's arm. "Come to bed, Bucky darlin'." He slapped some cold greasy stuff on my face. It hurt. I cursed him and said, "Where's Shannon? How is he?" "Mis' Bucky okay. You save life. You big hero, Mis' Jig. Mis' Gow come Bucky Shannon opened the door. He looked white and grim, and there was a big burn across his neck. He said: "Beamish is here with his lawyer." I picked up my shirt. "Right with you." Kanza went out, still giggling. Bucky closed the door. Nobody saw anything, of course?" Bucky shook his head. "Question is, Jig, who wants to kill us, and why?" "Beamish. He realizes he's been gypped." "One hundred U.C.'s," said Bucky softly, "for a few lousy swampedge mining camps. It stinks, Jig. You think we should back out?" bunch of ratty-looking plastic shacks huddling together in the middle of it. Men in slickers were coming out for a look. I saw Beamish's sleek yacht parked on a cradle over to the left, and our router's runabout beside it. Bucky Shannon groaned. Bucky said, "Jig—it's Sam Kapper." Bucky said gently, "Okay, Sam. Relax. What's the trouble?" . Male. Only one. You don't know...! Take him back." "Where is it, Sam?" I reached across Bucky suddenly and jerked the curtain back. Beamish was standing there. Beamish, bent over, with his ear cocked. Kapper made a harsh strangling noise and fell across the table. Beamish never changed expression. He didn't move while Bucky felt Kapper's pulse. Bucky didn't need to say anything. We knew. "Heart?" said Beamish finally. Beamish with his round dead baby face. I climbed over Shannon and pushed Beamish suddenly down into his lap. "Keep this guy here till I get back," I said. Shannon stared at me. Beamish started to get indignant. "Shut up," I told him. "We got a contract." I yanked the curtains shut and walked

<question>:
Why does Shannon reach for his gun when Beamish introduces himself?

<options>:
A The sound of the chair being pulled back sets him on high alert.
B He sees that Beamish has something in his hands.
C Shannon is prone to suspicion after being hunted down by people they owe money to, and thinks Beamish is one of them.
D Beamish tells them he's there to collect money from them.

<answer>:

C