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

<passage>:
of the outer reaches, and I'm not alone, although there aren't very many of us, never were. It made sense. Interstellar was new and they wanted him on the ship saying, "Transworld Press is willing to let you have a leave of abscence, if you're interested." He knew Secretary Phipps from years of contacting, and now Phipps said, "Personally, I don't want to see anybody else on the job. You've got a fine record in this sort of thing." Keith Ellason smiled, but just barely. "You should have called me for had taken off on the first trip to Antheon five years before with a thousand families, reached the planet with less than five Sessions in dealing with such matters. "Space affects men in a peculiar way," Phipps said. "We have conquered the problem of small groups in space—witness the discovery of Antheon, for example—but when there are large groups, control is more difficult." with each other and the crew. Sessions was lucky to escape with his life." "As I recall," Ellason said, "there was something about stunners." resourcefulness. They utilized these attributes to set up weapon shops to arm themselves." Interplanetary. Harvey Branson. No doubt you've heard of him. He's spent his life in our own system, and he's handpicking his own crew. We have also raised prerequisites for applicants. We don't think anything is going to happen, but if it does, we want to get an impersonal, Captain Branson and his fifty crewmen want to return as badly as you be the home for three thousand persons outward bound, only the crew on the return trip. It was equipped with every conceivable facility and comfort—dining rooms, assembly hall, individual and family compartments, recreation areas, swimming pool, library, theater. Nothing had been overlooked. Captain Branson's eyes sought his several times as Branson listened to final reports from his engineers, record keepers, fuel men, computermen, and all the rest. He grunted his approval or disapproval, made a suggestion here, a restriction there. There was no doubt that Branson was in charge, yet there was a human quality about him that Ellason liked. The captain's was a lean face, well tanned, and his eyes were chunks of blue. "Gentlemen," Branson said at last, as Ellason knew he would, "I want to introduce Keith Ellason, whose presence Interstellar has impressed introduced him to the others. All of them seemed friendly Ellason thought it was a good staff. Captain Branson. It seems to me—" why had Branson said that? Why hadn't Rexroad or Phipps said something, if it was important? He made himself comfortable in his seven-foot-by-seven-foot cubicle, which is to say he dropped on his bed, found it more comfortable than a year, just as there were homes like it for three thousand others, except that the family rooms would be larger. His quarters were near the front of the spike near the officers' quarters. should have been permitted aboard. Ellason had to smile at that. What did Captain Branson think of those colonists who killed each other on the Weblor I ? They had passed stability tests too. This, then, was what happened when you took three thousand strangers and stuck them in a can for a year. When Ellason saw Branson about it, the captain said, "Of course I realize it takes only a little thing like this to set things off. I know people get tired of seeing each other, playing the same tapes, looking at the stars from the observation dome, walking down the same corridors, reading the same books, eating the same meals, though God Branson asked him to describe the man. "Didn't you think that was important?" Branson asked in an outraged Captain Branson, demanding action. Branson remained seated behind his desk, unperturbed, saying, "I have no crewmen to spare for police duty." The delegation commenced speaking vehemently, to be quieted by Branson's raised hand. "I sympathize," Branson said, "but it is up to each quadrant to deal "You wonder at my reluctance, Mr. Ellason," Captain Branson said. "But "Do you think it is a member of the crew?" Branson's eyes were bright. Ellason left, feeling uneasy. If he were Branson, he'd initiate an Captain Branson did not wait for the newsletter. Through the ship's in the belt and had died of a severe beating. He said that since the incident occurred in the staff section of the ship, his crew would be "I will not countenance such an act by a crewman," Branson said. "If nine tomorrow morning in the auditorium. I will speak to you all then." Faces were angry, tongues were sharp at the meeting, eyes suspicious and tempers short. Above it all was the overpowering presence of Captain Branson speaking to them. each of the quadrants was named to serve under him. Each of these men in turn selected five others from his own group. Those assembled waited in the hall while each team of six inspected the compartments of the others. These compartments were then locked, everyone returned to his compartment, and the larger search was Tilbury said, "We've also thought of that. Suppose you supply us with half-power stunners? That way we can stun but not kill." They got their guns. Now there were twenty-four policemen on duty in the corridors—eight on at a time. Ellason observed that for the first time the passengers seemed relaxed. Let Red Mask move against armed men, they said. of themselves. A special congratulatory message from Captain Branson trigger-happy policemen thought their movements suspicious, about one man's suspicion of another and the ensuing search of compartments, remembered the face, and Captain Branson, who came to have a look at Harrel Critten and he was a record keeper third class. "Well, Critten," Branson roared at him, "what have you got to say for Branson looked as if he were going to kill the man himself right there do with the loot, Critten?" Critten looked him square in the eye and said, "I threw it out one of They executed Harrel Critten on the morning of the 270th day with blasts from six stunners supplied with full power. It was witnessed by a great crowd in the assembly hall. A detail from the ship's crew "Hello," Critten said, grinning from ear to ear. for this job, Gelthorpe Nill. Nill used to be in counter-espionage when there were wars." "You were excellent," Ellason said. "Can't say I enjoyed the role," said Critten, "but I think it saved lives." "Let me get this straight. Interstellar thought that it was idleness and boredom that caused the killings on the trained to be a scapegoat. Is that right?" Critten nodded. "When great numbers are being transported, they are apt to magnify each little event because so little happens. It was my job Branson smiled. "It made the time pass quickly and interestingly for "To say nothing of me," Critten said. "And you, Mr. Ellason, were along to observe it all," Captain Branson put in. "Interstellar wanted an accurate picture of this. If it worked, "Probably," Critten said, "you are wondering about the execution." Captain Branson will say they were found somewhere on the ship. You Captain Branson told them to do that." "Gave them something to do," Branson said. "Every time things got dull, I livened them up. I got a stunner and Branson cleared his throat. "Ah, Ellason about that story. You Critten sighed. "And I'll have to be caught again." Yes, we're anonymous, nameless, we Nillys, for that's what we call each other, and are a theme, with variations, in the endless stretches of deep space, objects of hatred and contempt, professional heels, dying once a trip when the time is ripe, antidote to boredom, and we'll

<question>:
What is the relationship between Captain Branson and Harrel Critten?

<options>:
A They both just wanted to get the expedition done so they could settle on a new planet
B They let their tension grew between them with their opposite goals
C They were old friends working together for the good of the ship
D They were colleagues in multiple capacities

<answer>:

D