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

<passage>:
Retief sat relaxed and said nothing. Just before the silence grew Magnan leaned back, waiting for Retief's reaction. Retief drew carefully on his cigar and looked at Magnan. Magnan frowned. "This is open aggression, Retief," he said, "in case I haven't made "This is no occasion for flippancy, Retief. In the wrong hands, this "I'll carry it, sealed," Retief said. "That way nobody can sweat it out all our eggs in one basket, Retief. I hope their confidence in you is every other man is a mechanic of some sort." Retief opened the envelope Magnan handed him and looked at the tickets start any long books." "You'd better waste no time getting over to Indoctrination," Magnan said. "They'll never guess," Retief said. "I'll pose as a gentleman." Retief put down the heavy travel-battered suitcase and leaned on the and a plastic snakeskin cummerbund groomed his fingernails, watching Retief from the corner of his eye. Retief glanced at him. "If I have to come around this counter," Retief said, "I'll feed that The clerk looked up and opened his mouth. Then he caught Retief's eye, Retief looked at him. "Which gate?" Retief said. Retief picked up his suitcase and walked away toward the glare sign Retief followed the signs, threaded his way through crowds, found a Retief pulled a paper from an inside pocket, handed it over. Retief put his suitcase carefully on the floor, took a step and drove a Retief put his bag down. He turned at a sound behind him. A tall, "Somebody in the cabin. Get 'em out." He rolled a cold eye at Retief as out of here, fellow! You're keeping Mr. Tony waiting." "Too bad," Retief said. "Finders keepers." "You nuts?" The thick-necked man stared at Retief. "I said it's Mr. "We'll see about you, mister." The man turned and went out. Retief glanced at Retief and went out. The thick-necked man returned. Retief rose and clamped the cigar between his teeth. He gripped a Retief turned to the baggage on the floor, tossed it into the hall. The "If you'll excuse me," Retief said, "I want to catch a nap." He flipped Retief looked up. A gaunt leathery-skinned man wearing white ducks, a blue turtleneck sweater and a peaked cap tilted raffishly over one eye stared at Retief. "Is this the joker?" he grated. The thick-necked man edged past him, looked at Retief and snorted, "That's him, sure." "When you can spare the time from your other duties," Retief said, Two big men edged into the cabin, looking at Retief. Retief put his cigar in an ashtray, and swung his feet off the bunk. "We're due to lift in twenty minutes." The thick-necked man and the Captain both shouted at once. The Captain's voice prevailed. "—twenty minutes ... uniform Code ... gonna do?" "Close the door as you leave," Retief said. glances Retief's way. A panel opened in the wall behind Retief's chair. Bright blue eyes said so. Don't like his friends, either. Don't like them dern Sweaties, look at a man like he was a worm." As Retief watched, four men arose from the table and sauntered across grating voice. "What's your game, hick?" Retief looked at the coffee cup, picked it up. "I don't think I want my coffee," he said. He looked at the thug. "You drink it." The thug squinted at Retief. "A wise hick," he began. Retief looked at Mr. Tony, still standing open-mouthed. "You can take your playmates away now, Tony," he said. "And don't bother to come around yourself. You're not funny enough." Mr. Tony found his voice. "Take him, Marbles!" he growled. Retief heard the panel open beside him. Thick-neck lunged and Retief hit him square in the face, knocking him "Aim that at me, and I'll kill you," Retief said. "Go on, burn him!" Mr. Tony shouted. Behind him, the captain appeared, white-faced. "Put that away, you!" he yelled. "What kind of—" won't mess with me." "What has Mr. Tony got on the captain, Chip?" Retief asked. sure like a feller that can put it away. I was a big eater when I was yer age." Retief looked at him questioningly. rubbery lookin' head. You can see the pulse beatin' when they get riled." "I've never had the pleasure," Retief said. There was a distant clang, and a faint tremor ran through the floor. "I ain't superstitious ner nothin'," Chip said. "But I'll be feet tapping on the floor. A flaring metal helmet shaded the deep-set compound eyes, and a loose mantle flapped around the knobbed knees. Behind the alien, the captain hovered nervously. "Who's your friend, Captain?" Retief said. clicked toothed pincers under Retief's nose. "Quick, soft one." "Captain, tell your friend to keep its distance. It looks brittle, and I'm tempted to test it." he can clip through steel with those snappers." from Retief's eyes. "I told you he was brittle," Retief said. "Next time you invite pirates aboard, don't bother to call." "Jesus, what did you do! They'll kill us!" the captain gasped, staring "He's dead." The captain stared at Retief. "We're all dead men," he said. "These Soetti got no mercy." "They won't need it. Tell 'em to sheer off We know their secret now." "What secret? I—" "Don't be no dumber than you got to, Cap'n," Chip said. "Sweaties die easy that's the secret." "Maybe you got a point," the captain said, looking at Retief. "All they "Maybe I can run a bluff on the Soetti," the captain said, looking back from the door. "But I'll be back to see you later." "You don't scare us, Cap'n," Chip said. "Him and Mr. Tony and all his goons. You hit 'em where they live, that time. They're pals o' these Sweaties. Runnin' some kind o' crooked racket." "You'd better take the captain's advice, Chip. There's no point in your getting involved in my problems." "They'd of killed you before now, Mister, if they had any guts. That's where we got it over these monkeys. They got no guts." "They act scared, Chip. Scared men are killers." "That," Retief said, "would be a hard one to answer." Retief awoke at a tap on his door. then turned to Retief. Retief sat up and reached for a cigar. Retief nodded, opened the door and stepped into the cabin. The captain "Power Section, this is the captain," he said. Retief reached across "Let go my hand, buster," the captain snarled. Eyes on Retief's, he "You can't put it over, hick." "Tell him." the mike and looked up at Retief. he's slippery." "What are you going to do?" the captain demanded. Retief settled himself in a chair. The captain looked at Retief. He laughed, a short bark. Retief took out the needler and put it on the desk before him.

<question>:
From the passage, what can be inferred about Retief's personality?

<options>:
A He's a "hick" as he is referred
B He's careful with his decisions
C He's scared to push the buttons on the wrong person
D He's tough and determined

<answer>:

D