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

<passage>:
a "Feetch M-D" next time "Feetch!" grated Ogden Piltdon, president of the Piltdon Opener Can-Opener!" roared Mr. Piltdon. "Look at our competitors. The International rips apart cans in three and three-tenths seconds. Universal does it in four." "But Mr. Piltdon—" Feetch adjusted his spectacles with shaking hands. "But Mr. Piltdon, "Dignity," pronounced Piltdon, "is for museums. Four months, Feetch! thought Feetch. Twenty-five years of close supervision, dead-lines, Ah, well, thought Feetch straightening his thin shoulders, he had can-opener lines. Departures, such as the thermal or motor-driven types, would be too expensive for mass production." Three new models and a group of cans were waiting for them on the but who has heard of Feetch? Well,"—Feetch blew his nose—"how do we "Hello," said Feetch as an aproned machinist entered carrying a glistening mechanism. "Here's another model. Let's try it." The machinist departed and Hanson locked the opener on a can. "I hope——" he turned the handle, and stopped abruptly, staring down open-mouthed. A cylinder of close-packed beans rested on the bench under the opener. The can itself had disappeared. "Chief," said Hanson. "Chief." "Spinach, I think," said Feetch. "Where did the can go, do you suppose?" The spinach can disappeared. Likewise several corn cans, sweet potato cans and corned-beef hash cans, leaving their contents intact. It was rather disconcerting. departures from the norm might achieve unconventional performance, but 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 Feetch shook his head. "No, Hanson. We're producing something we don't understand. What forces have we uncovered here? Where do the cans go? What makes them disappear? Are we dealing with a kinetic or a kinematic effect? What motions can we plot in the area of disappearance and what are their analytical mathematical formulae? What masses may be critical he exulted, "will make can-opener history. Instantaneous opening! Automatic disposal! Wait until Advertising and Sales get hold of this! We'll throttle our competitors! The Piltdon Super-Opener we'll call it." Feetch? The thing can be duplicated, can't it?" 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 don't give a damn where the cans go. May I remind you that under our standard patent agreement, all rights to your invention belong to the Close, thought Feetch, wearily. It had been a man-killing job, and it Piltdon, genial these days with success and acclaim, roared at Feetch: "Thank you, Mr. Piltdon." And still, thought Feetch wryly, he received 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 think I know where those cans are going. I recommend—" "Are you still worrying about that?" Piltdon roared jovially. "Leave Feetch?" and then over the entire nation the cans began to rain down. They fell outdoors and indoors, usually materializing at heights that were not A state of national emergency was declared. Government investigators went to work and soon confirmed what was generally suspected: these were the same cans that had been opened by the Piltdon Super-Opener. Statisticians and mathematicians calculated the mean rate of can precipitation and estimated that if all the cans opened by Piltdon openers were to come back, the deluge should be over in fifteen point in the plant, surrounded by bodyguards. Livid with fury and apprehension, he screamed at Feetch, "This is your doing, you vandal! I'm a ruined man!" A falling can caught him neatly on the tip of his nose. "But sir," trembled Feetch, dodging three spaghetti cans, "I tried to the Super-Opener. Now, get out!" "Yes, sir," said Feetch paling. "Then you don't want to hear about my discovery of a way to prevent the cans from coming back?" Klunk! A barrage of cans hit the floor, and both men took refuge under Piltdon's huge desk. "No!" yelled Piltdon at Feetch's face which was inches away. "No, I——What did you say?" "A small design improvement sir, and the cans would disappear forever." Klunk! "Forever, Feetch?" "You're positive, Feetch?" Piltdon's eyes glared into Feetch's. he mused. "The New Type Super-Opener. Free exchanges for the old. Cash guarantee that empty cans will never bother you. Take a licking at first, but then monopolize the market. All right, Feetch, I'll give you another chance. You'll turn over all the details to me. The Feetch felt himself sag inwardly. "Mr. Piltdon," he said. "I'm asking "Feetch!" howled Piltdon. "I order you to remain!" Feetch almost submitted from force of habit. He hesitated for a moment, then turned abruptly. "Good-day," said Feetch firmly, sprinting through the falling cans to the door. Money, Feetch decided after a while, was a good thing to have. His supply was running pretty low. He was not having any luck finding another job. Although the cans had stopped falling on the fifteenth day, as predicted by the statisticians, industry would not soon forget up, "Not the Kalvin Feetch who—" "Yes," Feetch would admit miserably. Piltdon, Feetch thought, feeling a strange sensation deep within his No, Feetch told himself, he was revealing nothing that Piltdon might Feetch. I know you can't find work anywhere else." the rocks, the tomatoes, the rotten eggs, the sneaking out at night, the disguises you've had to use. Why don't you come back to us and change all that, Feetch? We'll put out the New Type Super-Opener and the world will soon forget about the old one." Think of that, Feetch." Feetch blinked. This had not occurred to him. over, Feetch." Feetch sat, thinking it over. Was it right to let all these people lose Feetch hung up. A glow of anger that had been building up in his chest Feetch walked into the kitchen and carefully poured himself a drink of hand. "Here is everything I know about what I call the Feetch Effect, "Well," murmured the Government man, "I never did think Feetch got a Published in the newspapers the following day, Feetch's statement read, indicated, Alpha space seems to be thickly inhabited. These inhabitants, the nature of whom I have not yet ascertained, obviously resented the intrusion of the cans, developed a method of disrupting the screen from their side, and hurled the cans back at us. "However, I have established the existence of other spaces up to Mu also adjacent to our own space, is devoid of any form of life. The New Type Super-Opener is designed to pass cans through the Beta screen. Beta space will safely absorb an infinite number of cans. "Mr Feetch—" said Piltdon. Feetch looked up from his desk in the newly constructed Feetch "But Mr. Feetch—"

<question>:
What didn't Feetch discover?

<options>:
A Where the cans were going
B The fastest-opening can opener
C Multiple different universes
D How to make the cans disappear safely

<answer>:

B