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

<passage>:
"Clark, how's the time going?" answer must be produced ... what do you do? BY JAMES BLISH Illustrated by van Dongen ("One-Shot") Braun was in the city going about his normal business, which was making another million dollars. As we found out later, almost nothing else was normal about that particular week end for Braun. For one thing, he had brought his family with him—a complete departure from routine—reflecting the unprecedentedly legitimate nature of the deals he was trying to make. that to the master of the knew nothing about this until afterward "And if there ever was such a man, Braun is it. That's why I asked him to come down here. I want him to look at that lump on the screen A decorous knock spared me the the way we operate, and there it is. ignore the judgment. It was Braun Certainly nobody at CIA so much as thought of Braun when the news first came through. Harry Anderton, trouble of having to deny, affirm or the gambler hadn't bothered to read what a college student had thought R—clean and routine). How did you find out about this egg Braun was in the suit with him. "I come over as soon as your runner got to me," he said. "What's the pitch, Andy?" "Mr. Braun, this is Joan Hadamard, Clark Cheyney, Colonel Anderton. I'll be quick because we need got to find out which—and we want you to tell us." Braun's aristocratic eyebrows went up. "Me? Hell, Andy, I don't know nothing about things like that. I'm Dr. Hadamard. Can't even tell its know whether the "That's what I keep trying to explain to you, Dr. Harris. We don't know what she dropped and we haven't any way of finding out. It "Try the Geiger." the whole procedure was designed to There was a lag and I turned back to Braun. "As you can see, we're stymied. This is a long shot, Mr. Braun. One throw of the dice—one show-down hand. We've got to have an expert call it for us—somebody was the Associated Universities organization which ran Brookhaven by a loose corporation of universities years now." Braun wiped his face. "No. You don't get it. I wish you'd listen to and industries all of which had wanted to own an ULTIMAC and hunches have been working for sixty to buy one for itself. The Eisenhower administration, with its emphasis on private enterprise and concomitant me. Look, my wife and my kids are Joan Hadamard, CIA's business manager I looked up at Braun. He was and social science division chief respectively. The titles were almost be. I tried to keep at least my voice calm. "Please try it anyhow, Mr. Braun—as a favor. It's already too late to do it any other way. And if you guess solely for the benefit of the T/O—that frightened, and again I was surprised without having any right to down my back. Without the eyes, Braun's face was a death mask. The water sounds and the irregular ticking of a Geiger counter long ago. Droplets of sweat began to form along Braun's forehead and his upper This is CIA, Harris calling. Come in, lip. The handkerchief remained crushed in his hand. Anderton said, "Of all the fool—" Slowly, Braun opened his eyes. "All right," he said. "You guys wanted it this way. ... "Got anything yet?" "Not a thing, Dr. Harris," Monig "Hush!" Joan said quietly. Anderton was already grabbing for the phone. "You're right, Mr. Braun. If it isn't already too late—" Cheyney shot out a hand and "Have you taken blood tests?" "We're getting plenty of radiation now. Just a minute— Yeah. Dr. Hadamard, it's a bomb, all right. said. Dr. Harris, we've got to evacuate the city first of all! No matter whether "That's right, a dud." Now, at last, Braun wiped his face, which was quite gray. "I told you to duck out just like that? Remember, "Don't move a man until you get I went down looking for surprises. I found nothing but a faint asked whether it was a bomb or not. You said it was, and you were right." There'd been a time when I'd known Braun, briefly and to no profit to either of us. As an undergraduate majoring in social sciences, I'd taken on a term paper on the old The expression on Braun's face was exactly like the one he had worn while he had been searching for his who knew the signs could still pick up some traces on the docks. In those days, Braun had been the business manager of an insurance firm, the sole visible function of which had "It was more than a trick," Clark put in. "You'll remember we had a deadline on the test, Mr. Braun. been to write policies for the ILA Obviously, in a real drop we wouldn't and its individual dock-wallopers. For some reason, he had been amused have all the time in the world Braun was in the city over the week end. It would never have occurred to me that he still interested himself with a vengeance. He was still a professional gambler, and according to what he had told the "And that means that you were the only person who did come through, Mr. Braun. If a real bomb-drop ever comes, we're going to have on horses, the numbers, or shady insurance was called investment—mostly in real estate realtors knew him well as the deals. Nowadays what he did to have you here, as an active part of Braun intently, but his impassive face failed to show any trace of how his thoughts were running. the final clinical note in a case history. "It's funny," he said, "I was thinking of running for Congress but people like Braun are damned with a conscience, and sooner or later they crack trying to appease it." "I'd sooner try to crack a Timkin bearing," I said. "Braun's ten-point steel all the way through." "Don't you believe it. The symptoms "That's investment," I said. "That's his business." "The next thing he'll do is go in for direct public service—giving money to hospitals or something like that. She had been right within the year, Braun had announced the founding of an association for clearing the Detroit slum area where he Let's not have any more Abner Longmans Brauns born down here . It depressed me to see it happen, for next on Joan's agenda for Braun was an entry into politics as a fighting liberal—a New Dealer twenty years too late. Since I'm mildly liberal myself when I'm off duty, I hated to think what Braun's career might tell me about my own motives, if I'd let it. trail to Abner Longmans Braun, most can't take such a gamble. There are eight and a half million lives riding on it—" That put it up into Braun's normal operating area, all right. The connection was still hazy, but on the He remembered me instantly "CIA business?" "Yes. I didn't know you knew I was with CIA." Braun chuckled. "I still know a thing or two," he said. "What's the angle?" "That I can't tell you over the International Longshoreman's Association, an expert. Can you come down to a racket-ridden union now got it. I'd given him my word. "You'll get it," I said. "Thanks, Mr. Braun." I called headquarters and sent a messenger to my apartment to look with the legal-length sheets inside them, with orders to scorch it over to Braun without stopping to breathe more than once. Then I went back myself. "Not quite. I've got something, if I can just figure out what it is. Remember One-Shot Braun?" "Yes. What's he got to do with it?" whole area is littered with crates. Harris, you've got to let me get that alert out!"

<question>:
How does Dr. Harris know Braun?

<options>:
A Dr. Harris arrested Braun for fraud.
B They went to undergraduate college together.
C Braun used to work for the CIA.
D Dr. Harris wrote a term paper about Braun and his business.

<answer>:

D