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

<passage>:
stronger, flashier and more musical than any other on the market. I want it completely developed, engineered and tooled-up, ready for production. Otherwise, Feetch—" enough for development, even with an adequate staff. I've been trying to tell you for years that we're bound to fall behind because we don't have enough personnel to conduct research. Our men can barely keep no more!" Piltdon trudged out of the room, leaving behind him an oppressive silence. How could you set a time limit on research and development? A designer had to dream at his board, investigate, search, build, test, compare, discard. He had always wanted to devote all his time to research, but thought Feetch. Twenty-five years of close supervision, dead-lines, production headaches, inadequate facilities and assistance. What had happened, to the proud dream he once had, the dream of exploring uncharted engineering regions, of unlimited time to investigate and develop? Ah, well, thought Feetch straightening his thin shoulders, he had managed somehow to design a few good things during his twenty-five years with Piltdon. That was some satisfaction. What now? He had to hang on to his job. Technical work was scarce. Since the early 1980's the schools had been turning out more technicians than industry could absorb. He was too old to compete in How to meet this four month dead-line? He would get right on it himself, of course Hanson—good man—could work with him. He shook his head despairingly. Something would be sure to blow up. Well, he had to start— "Chief," said Hanson a few weeks later as they entered the lab, "I'm beginning to wonder if the answer is in the hand mechanical type at all." "Got to be," answered Feetch tiredly. "We must work along classical ratios would give the required velocity, but there were too many other factors that negated this direct approach. The mechanism had to compensate for variable can sizes had been too complex to be practical. There was the ever-present limit to production cost. unsatisfactory." "Hello," said Feetch as an aproned machinist entered carrying a glistening mechanism. "Here's another model. Let's try it." The this—Dear, dear. Where do the cans go, I wonder?" "What's the difference? Don't you see what you've got here? It's the answer! It's more than the answer! We can put this right into work and beat the dead-line." Feetch shook his head. "No, Hanson. We're producing something we don't are their analytical mathematical formulae? What masses may be critical here? What transformations of energy are involved? No, Hanson, we must learn a lot more." Piltdon stared at his chief engineer sharply. "What's the matter, Feetch? The thing can be duplicated, can't it?" "Yes, sir. I've just finished checking that. But I'm in the midst of further investigation of the effect. There's more here than just a new type can-opener, sir. A whole new field of physics. New principles. This is big, Mr. Piltdon. I recommend that we delay production until further research can be completed. Hire a few top scientists and engineers. Find out where the cans go. Put out a scientific paper on the effect." "Feetch," bit out Piltdon, his face growing hard. "Stow this hooey. I sales to one to a customer. Piltdon cancelled his advertising program. Newspapers, magazines, radio, television and word-of-mouth spread the fame of the opener so that advertising was unnecessary. Meanwhile, of course, government scientists, research foundations, universities and independent investigators began to look into this new phenomonen. Receiving no satisfactory explanation from Piltdon, they set up their own research. Far into the night burned the lights of countless laboratories. Noted physicists probed, measured, weighed, traced, X-rayed, dissolved, spun, peered at, photographed, magnetized, exploded, shattered and analyzed Super-Openers without achieving the glimmer of a satisfactory explanation. Competitors found the patent impossible to circumvent, for any departure from its exact specifications nullified the effect. "Thank you, Mr. Piltdon." And still, thought Feetch wryly, he received no recognition. His name did not even appear on the patent. Well, well, that was the way it went. He must find his satisfaction in his work. And it had been interesting lately, the work he had been doing nights at home investigating what had been named the Piltdon Effect. It had been difficult, working alone and buying his own equipment. The oscillator and ultra microwave tracking unit had been particularly expensive. He was a fool, he supposed, to try independent research when so many huge scientific organizations were working on it. But he could no more keep away from it than he could stop eating. He still didn't know where the cans went, but somehow he felt that he was close to the answer. When he finally found the answer, it was too late. The Borenchuck incident was only hours away. As soon as he could get hold of Piltdon, Feetch said trembling, "Sir, I "That's true," said Piltdon. His eyes grew dreamy. "It can be done," he mused. "The New Type Super-Opener. Free exchanges for the old. production, at once, Feetch." Feetch felt himself sag inwardly. "Mr. Piltdon," he said. "I'm asking only one favor. Let me work full time on research and development, especially on the Piltdon effect. Hire a couple of extra men to help with production. I assure you the company will benefit in the end." your job back, didn't you?" The prospect of long years of heavy production schedules, restricted engineering and tight supervision suddenly made Kalvin Feetch feel very tired. Research, he thought. Development. What he had always wanted. Over the years he had waited, thinking that there would be opportunities later. But now he was growing older, and he felt that there might not be a later. Somehow he would manage to get along. Perhaps someone would give him a job working in the new field he had pioneered. With a sense of relief he realized that he had made his decision. day, as predicted by the statisticians, industry would not soon forget the inconvenience and losses caused by the deluge. It was not anxious to hire the man it regarded as responsible for the whole thing. "Yes," Feetch would admit miserably. "I am sorry, but—" He did no better with research organizations. Typical was a letter slow anger, Piltdon was hitting low and getting away with it. Of course, if he were to agree to reveal his latest discoveries to a research organization, he would undoubtedly get an appointment. But how could he? Everything patentable in his work would automatically revert to Piltdon under the one year clause in the company patent agreement. No, Feetch told himself, he was revealing nothing that Piltdon might But he was beginning to need money desperately. Jenny wasn't getting any better and medical bills were running high. let you." "You're beginning to weaken. Don't. Think, chief, think. The brain that figured the Super-Opener can solve this." Feetch hung up. A glow of anger that had been building up in his chest grew warmer. He began pacing the floor. How he hated to do it. Think, Hanson had said. But he had. He's considered every angle, and there was no solution. Feetch walked into the kitchen and carefully poured himself a drink of water. He drank the water slowly and placed the glass on the washstand Think? He'd figured the solution long ago, only he hadn't allowed himself to see it. Not lack of brains, lack of guts. Well, he thought grimly, dialing Piltdon's number, he was going through with it now. "Well," murmured the Government man, "I never did think Feetch got a fair shake." "This information is important to science," said the Van Terrel man.

<question>:
Why did Kalvin continue researching on his own at home?

<options>:
A He wanted to be sure it was safe.
B He needed to work extra hours to meet the deadline.
C He wanted to patent the Super-Opener idea for himself.
D He wanted to better understand the technology and create a solution.

<answer>:

D