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

<passage>:
social institutions, Mr. Halloway." I tried to make him understand my position. "Look, it's the big-money men who are supposed to be contributing to the support of this college. that—and an institution is where they put Aunt Maggy when she began collecting Wheaties in a stamp album. We can't appeal to them that way. Come on now." I smiled condescendingly, knowing it would irritate him. "What are you doing that's worth anything?" He glared at me, his white hair bristling and his nostrils dilated like a war horse about to whinny. I can say one thing for them—these in what way?" I stopped him with both raised hands. "Please, Professor Caswell! That would hardly be a recommendation. Washington, the New Deal and the present Administration are somewhat touchy subjects to the men I have Prof. Caswell smiled back tightly. He knew his department was at stake. and industry. Caswell had to show a way to make his own department are ways of doing it indirectly. He laid down his book and ran a hand over his ruffled hair. "Institutions—organizations, that is—" his voice became more to deliver an essay—"have certain tendencies built into the way they He was becoming flushed with the pleasure of explaining his subject. "All through the ages, it has been a matter of wonder and dismay to men that a simple organization—such as a church to worship in, or a delegation of weapons to a warrior class merely for defense against an outside enemy—will either grow insensately and extend its control until it is a tyranny over their whole lives, or, like other organizations set up to serve a vital need, will tend to repeatedly dwindle and vanish, and have to be painfully rebuilt. "The reason can be traced to little quirks in the way they were organized, a matter of positive and negative power feedbacks. Such mathematics, expressing the human factors of intermeshing authority and Federal corporations. Washington—" I held up my palm again. "Please, not that nasty word again. I mean, repressing an urge to hit me with it. He spoke quietly. "All right, I'll give you a demonstration. Are you "I wouldn't mind hearing more, but I'm having lunch with some executors of a millionaire's will. They have to be convinced that by, 'furtherance of research into human ills,' he meant that the money "I see you have your problems, too," Caswell said, conceding me I shook hands and left him standing there, sure of his place in the progress of science and the respect of his colleagues, yet seething inside because I, the president and dean, had boorishly demanded that Caswell had to make it work or get out. everything." It was a row of little symbols arranged like an algebra equation. One was a concentric spiral going up, like a cross-section of a snowball clear as a sentence. I was impressed and slightly intimidated by it. He had already explained enough so that I knew that, if he was right, here was the growth of the Catholic Church and the Roman Empire, the conquests of Alexander and the spread of the smoking habit and the strength of snow, it breaks apart. Now in human terms—" The chops and mashed potatoes and peas arrived. He was deep in the symbology of human motives and the equations of reason why the members would lose if any of them resigned, and some indirect way they could use to force each other to stay in." "The first is the chain letter principle," he nodded. "I've got that. The other...." He put the symbols through some mathematical manipulation so that a special grouping appeared in the middle of the equation. "That's it." Since I seemed to have the right idea, I suggested some more, and he added some, and juggled them around in different patterns. We threw out a few that would have made the organization too complicated, and finally worked out an idyllically simple and deadly little organization setup where joining had all the temptation of buying a sweepstakes ticket, going in deeper was as easy as hanging around a race track, and with him the President of the University, leaning across the table toward each other, sipping coffee and talking in conspiratorial tones over something they were writing in a notebook. That was us. stood up, bowing to polite applause and smiles. "Professor Caswell, and I pointed out to Caswell the member I thought would be the natural half doze while Caswell stayed awake beside me and wrote in his I nudged Caswell and murmured, "Did you fix it so that a shover has a "I think there's a way they could find for it," Caswell whispered back, she After the meeting, Caswell drew the tall woman in the green suit If Caswell's equations meant anything at all, we had given that sewing circle more growth drives than the Roman Empire. how the test was coming along. Passing Caswell's office, I put my head "Caswell, about that sewing club business—I'm beginning to feel the suspense. Could I get an advance report on how it's coming?" "I'm not following it. We're supposed to let it run the full six months." "But I'm curious. Could I get in touch with that woman—what's her answered with a bored drawl: down on top of the graph of membership in the sewing circle. No more members.... Poor Caswell. The bet between us was ironclad. He wouldn't let me back down on it even if I wanted to. He'd probably quit before I put through the first slow move to fire him. His professional pride would be shattered, sunk without a trace. I remembered what he said about shooting himself. It had seemed funny to both of us at the time, but.... What a mess that And what if Caswell asked me what I had found out in the meantime? I hand it back, she retreated. "Oh, you can keep it. It's the new one. Everyone's supposed to have it. We've just printed up six thousand copies to make sure there'll be enough to last." " All we need is more members. Now get out there and recruit! " All I told Caswell when I got back was that the sewing circle had fusion, but keeping the same constitution—the constitution with the bright promise of advantages as long as there were always new members being brought in. And good prospects of being pulled in with them, ideas, ambitions and all. member with its contractual obligations and its lures, if the inert, cantankerous, or both. Caswell's formula could be a handle to grasp them with. Gratitude alone would bring money into the university in carload lots. were spectacular. Caswell's formulas were proven to the hilt. "Perfect, Wilt, perfect well and you're satisfied?" He was definitely putting on a chill. We were friends now, but obviously he was still peeved whenever he was reminded that I had doubted that his theory could work. And he was using its success to rub my nose in the realization that I had been wrong. A man with a string of degrees after his name is just as human as anyone else. I had needled him pretty hard that first time. "I'm satisfied," I acknowledged. "I was wrong. The formulas work grow . It falls apart naturally when built in as one of the incentives that the members know they are going to lose if membership stops growing. Why, if I tried to stop it now, they'd cut my throat." I had seen. They probably would. "No," he continued. "We'll just let it play out to the end of its tether and die of old age." "When will that be?" The graph on the desk before me began to look sinister. Surely Caswell must have made some provision for— "You underestimate their ingenuity," I said into the phone. "Since they contractual, open to all. That social dividend sounds like a Technocrat climbed on the band wagon, eh?" Allowing for a lag of contagion from one nation to another, depending on how much their citizens intermingled, I'd give the rest of the world about twelve years. There was a long silence while Caswell probably drew the same graph so. What happens then, I don't know. But I don't want anyone to pin that on me. From now on, if anyone asks

<question>:
What is the relationship between Caswell and the protagonist?

<options>:
A They're coworkers
B One is the other's boss
C They're old friends
D They're brothers

<answer>:

B