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

<passage>:
send the intruder on his way. Keech the entire problem all but whipped. It is not difficult to understand why. houlihan's The working model and the fact equation that the small people with their quick eyes and clever fingers could hearing the old tongue and talking of the old things every day, and spot all sorts of minute shortcomings was a great help. And I was nuclear propulsion center—a cool, each other to hush, be quiet, and the soft breeze stirring them up again. I had known precisely such symbols and handed it to Keech. and under all conditions of friction and combustion." "Thank you, Mr. Houlihan," said Keech. All his people had gathered coefficient of discharge for the matter work out an equation to give the in combustion. You may call it "Mr. Houlihan," said Keech, in a loose circle, as though attending leprechauns. If we ever meet again, upon another world perchance, you'll find our friendship always eager and ready." "Thank you," I said. "And now, Mr. Houlihan," said Keech, "I'll see that a quantity of Without this coefficient to give I see I shall have to explain this, bargain." us control, we would have lacked a Keech's eyebrows popped upward. "What's this now?" proportional to the square "I don't feel it would be root of the pressure-head driving it. sort." "Well," said Keech in surprise, and other factors make the velocity of nuclear explosion—which is what the drive amounts to despite people. "We'll have three cheers now, do you hear, for Mr. Houlihan—friend from a mortal." He turned to his makes quite a difference. I had And they cheered. And little tears crept into the corners of some of their turned-up eyes. We shook hands, all of us, and I left. much of this that if you're not a nuclear engineer yourself it's certain I walked through the park, and and structure— Oh, there is so to weary you. along. It smelled exactly like a point of discharge, atomic weight back to the nuclear propulsion center. And all this talk of coefficients and how I had gotten the best of the equations sits strangely, you might named Kevin Francis Houlihan. But I am, after all, a scientist. If I had not been a specialist in my field I would hardly have found myself engaged in vital research at the center. Anyway, I heard these little their spaceship to work now, and say, upon the tongue of a man in eerily mysterious fashion with a them. determined the true coefficient of in the glade with Keech and his working model. It would go down in scientific literature now, I suppose, as Houlihan's Equation, and that was honor branches. And what do you suppose do without Keech's pot of gold, and glory enough for me. I could with a crank face. He was beating those electrical connections over There was no sense in cheating him out of the gold to boot, for leprechauns are most clever in matters Indeed, I had done a piece of work greatly to my advantage, and also to the advantage of humankind, and when a man can do the first and include the second as a fortunate byproduct it is a most happy accident. For if I had shown the little people how to make a spaceship they now, wouldn't we be even over five feet in height. more likely to blow ourselves to Kingdom mind that man standin' there! You know he can't see nor hear us!" Oh, it was good to hear the rich old tongue again. I smiled, and the This etext was produced from then? said, "What? What's that, now?" job of work for almost shamefully generous pay. You see, in a place as full of science as the nuclear propulsion center there is not much time for the old things. I very much course it was a spaceship, or a almost miraculously complete and workable. Houlihan of the Roscommon Houlihans. satisfactory conclusion. and talk to me, I'll wreck this spaceship from stem to stern!" " " stood there. The others all followed at a safe distance. I smiled to reassure them and then waved my arm in a friendly gesture of greeting. is Keech." "And mine's Houlihan, as I've "Mr. Houlihan," said Keech, up about himself, "in such matters I am never fully convinced. After living for many centuries I am all too acutely aware of the perversity of human nature." "Yes," I said. "Well, as you will Houlihan." "And often that's all Houlihan. And afterward we'll appreciate pipe. "Why," I asked, "would a Keech stared back without much a spaceship. I was surprised enough the little people. It happens every so often, though not as frequently as it did a century ago. But knowing a spaceship at first glance! Well, I does me." "And why wouldn't I know a "It just so happens I'm a doctor of science." "A doctor of science, now," said Keech. "Invited by the American government edge, the velocity of approach to the center. Since it's no secret I can advise you of it." "A scientist, is it," said Keech. "Well, now, that's very interesting." "I'll make no apologies for it," I said. "Oh, there's no need for apology," said Keech. "Though in truth we prefer poets to scientists. But it has just now crossed my mind, Mr. Houlihan that you, being a scientist, might be of help to us." "How?" I asked. usually does." Keech took out his own pipe—a Keech, "to learn how to make a spaceship." "A spaceship, now," I said, unconsciously adopting some of the inclined," said Keech. and laughter and mischief, as anyone knows." "Myself included," I agreed. "Then why do you need a spaceship?" "Well, if I may use an old expression, up in the process of destroying yourselves." "There is Keech, "the little people have decided Which we're buildin' here and I was inclined to suggest the construction. Naturally, we didn't understand all of your high-flyin' science, but some of our people are pretty clever at gettin' up replicas of things." thought it was by the Russians. There's one thing which puzzles when you're thinkin' of us, and of course truly believin' in us. I don't know—'tis a thing of the mind, and not important at the moment. What's important is for us to get has crossed my mind. That's why I'm wastin' all this time with you, sir. You say you are a scientist." "A nuclear engineer." "Well, then, it may be that you can help us—now that you know "Help you?" "The power control, Mr. Houlihan. to know at any instant exactly how much thrust is bein' delivered for a coefficient of discharge." said Keech, shrugging. "'Tis the "And you want me to help you with this?" "Well, now, Keech," I said "Ha!" said Keech, grinning, but humans! I knew it! Well, Mr. Houlihan, I'll give you reason enough. The pot o' gold, Mr. Houlihan!" Nor is it actually in an earthen crock. But there's gold, all right, enough to make you rich for the offer," I said. Keech had the goodness apart, and were deep in argument about the whole project. It was a most fascinating session. I had often wished for a true working budget for it. Keech brought me paper and pencil and I talked with the aid of diagrams, as engineers are wont to do. Although the pencils able to make many sensible observations and even a few innovations. but Keech and his people made a

<question>:
Which best describes the relationship between Keech and Houlihan?

<options>:
A Keech doesn't prefer interacting with scientists but he knows he can trust Houlihan
B Houlihan is resentful for being taken away from time in his own lab but feels indebted to Keech
C They have a tenuously constructed relationship based on trust necessitated by the situation
D There is a lot of mutual trust and respect between scientists

<answer>:

C