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

<passage>:
Every writer must seek his own Flowery Kingdom in imagination's wide demesne, and if that search can begin and end on Earth his problem has been greatly simplified. In post-war Japan Walt Sheldon has found not only serenity, but complete freedom to write undisturbed about the things he treasures most. A one-time Air Force officer, he has turned to fantasy in his lighter moments, to bring us such brightly sparkling little gems as this. houlihan's that the small people with their by ... Walt Sheldon The tiny spaceship had been built for a journey to a star. But its quick eyes and clever fingers could spot all sorts of minute shortcomings equation The working model and the fact small, mischievous pilots had a rendezvous with destiny—on Earth. was a great help. And I was On the sixteenth day I covered a piece of paper with tiny mathematical symbols and handed it to Keech. I must and under all conditions of friction and combustion." "Thank you, Mr. Houlihan," said coefficient of discharge for the matter "Mr. Houlihan," said Keech, us control, we would have lacked a workable equation when we set about putting the first moon rocket "And now, Mr. Houlihan," said around those extraordinary engines of ours, which were still in the undeveloped blueprint stage. I see I shall have to explain this, It is not difficult to understand why. the entire problem all but whipped. proportional to the square root of the pressure-head driving it. of nuclear explosion—which is what the drive amounts to despite the fact that it is simply water in now, do you hear, for Mr. Houlihan—friend which nuclear salts have been previously and structure— Oh, there is so much of this that if you're not a nuclear engineer yourself it's certain to weary you. Perhaps you had better take my word for it that without this equation—correctly stated, mind you—mankind would be well advised not And all this talk of coefficients and how I had gotten the best of the little people. Surely it was not every 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 mortal who could accomplish that. I had given them the wrong equation, say, upon the tongue of a man of course. They would never get their spaceship to work now, and center. St. Patrick's Day. For I had indeed determined the true coefficient of discharge, which I never could have absent-minded. I tiptoed to the edge of the trees, not wanting to deprive his working model. It would go down in scientific literature now, I suppose, as Houlihan's Equation, and that was honor and glory enough for me. I could do without Keech's pot of gold, with a crank face. He was beating though it would have been pleasant There was no sense in cheating him out of the gold to boot, for leprechauns are most clever in matters of this sort and he would have to be truly rich for a change. made it a burden in some way. 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 had it back soon enough—or else For if I had shown the little people how to make a spaceship they would have left our world. And it is a most happy accident. on my tenth birthday. And I had become convinced they could never work! You'll not be needin' to mind that man standin' there! You know he can't see nor hear us!" for us to believe in every now and then? Transcriber's Note: Extensive research did not uncover any evidence that the U.S. wanted their crock of gold, of course. I'd be entitled to it if I could catch one and keep him. Or so the legends affirmed, though I've wondered often about the truth of them. But I was after no gold. I only wanted even if I had latched on to a fine job of work for almost shamefully generous pay. You see, in a place as full of science as the nuclear propulsion course it was a spaceship, or a almost miraculously complete and workable. I shook my head in wonder, then me apprehensively. I lifted my Houlihan of the Roscommon Houlihans. I am descended from King Niall himself—or so at least my father used to say! Come on out now, and pass the time o' day!" Then I waited, but they didn't a resounding blow with my fist. The leader—he seemed more "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 quickly see, all I want to do is Houlihan." Houlihan. And afterward we'll appreciate leave us to our work." "Well, now, your work," I said, and glanced at the spaceship. "That's exactly what's got me curious." astonish "It just so happens I'm a doctor of science." "A doctor of science, now," said "A scientist, is it," said Keech. "Well, now, that's very interesting." "I'll make no apologies for it," I 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. beginning," he replied. "You might," I said. "A man "But continue." "We had to come here," said Keech, "to learn how to make a adopting some of the "Leprechauns are not really mechanically inclined," said Keech. "Their major passions are music 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, would a man unravel a statement such as that?" "It's very simple. With all the I was inclined to suggest the but I was hooted down. Be that as it make the ship, and proceed with its construction. Naturally, we didn't understand all of your high-flyin' science, but some of our people are What's important is for us to get and then we'll be on our way." "You're determined to go." "Truly we are, Mr. Houlihan. 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. As I understand it, 'tis necessary to know at any instant exactly "Whatever it might be named," said Keech, shrugging. "'Tis the one thing we lack. I suppose eventually not with humor, "the avarice of humans! I knew it! Well, Mr. Houlihan, I'll give you reason enough. The pot o' gold, Mr. Houlihan!" any small scalawags of their pleasure, enough to make you rich for the in the glade with Keech and about the whole project. It was a most fascinating session. I had often wished for a true working paper and pencil and I talked with the aid of diagrams, as engineers are wont to do. Although the pencils were small and I had to hold as you would a needle, I was able to make many sensible observations and even a few innovations. every day for the following two weeks. It rained several times, but Keech and his people made a or anything the leprechauns had made, not being believers. I would halt work, pass the time of day, and then, in subtle fashion,

<question>:
Why did Houlihan consider his work to the advantage of humankind?

<options>:
A He has furthered the goals of the little people, and not just the humans, making Earth a better place
B He thought taking advantage of the little people's project to further his own goals was in line with human ideals
C He thinks that sabatoging the little people will be better for the goals of humans
D He thought human goals of scientific advancement could not be completed without his work

<answer>:

C