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

<passage>:
not see him. The single red switch pointed downward on the instrument By WILLIAM TENN Illustrated by GAUGHAN Mac Albin pushed the little red switch from him. Mac Albin pushed the little red switch from him. before the Blight, it would never have been discovered that he and his white leghorn hens and two roosters—about one-sixth of the known livestock wealth of the Western Hemisphere—thoroughly content with Alben ordinarily, let alone confer a lifetime pension on his wife and five children of a full spoonful each of non-synthetic sugar a day? Even if he didn't come back, his family was provided for like almost no other family on Earth. This was a damn good job and he was lucky. the far side of the room and was approaching him with a sealed metal cylinder in one hand. "We've decided to add a further precaution at the last moment," the old have given my approval." The last remark was added with a slight questioning note as the duration for which it has been preset, a hundred and thirteen years, to the moment after the Guided Missile of 1976 was launched. It is 1976, isn't it?" he asked, suddenly uncertain. "Yes, sir," one of the technicians standing by the time machine said 1976." He glanced proudly at the unemotional men on the couches, very much like a small boy after completing a recitation before visiting dignitaries from the Board of Education. He paused, having evidently stumbled out of his thought sequence. "And he pulls the red switch toward him," Gomez, the dandelion-root magnate, reminded him sharply, impatiently. "Ah, yes, the red switch. He pulls the little red switch toward him. originally planned." The Secretary-General of the United Nations beamed. "Thus preventing the Blight, making it nonexistent, as it were, producing a present-day least they were the color of the surrounding cloth. Sadha might be Secretary-General of the United Nations, but that medium. Our purpose here, as you no doubt—" Levney sat up on his couch and snapped his fingers peremptorily. "I just heard Gomez tell you to get this thing moving, Sadha. And it isn't moving. We're busy men. We've wasted enough time." "I was just trying to explain a crucial final fact," the Move! " It was a good job and Mac Albin knew whom he had to thank for it—his being put into operation. But it meant a lot more to Mac Albin than before the Epidemic, it would never have been discovered that he and And if that had not been discovered, the Albins would not have become physicists upon the passage of the United Nations law that everyone life-guarding world the Earth had become, Mac Albin would never have Albin and Honek watched him stuff several sheets of paper into a small sentenced to complete loss of professional status and spend the rest of our lives supervising robot factories." "Oh, it won't be that bad," Albin reassured him absent-mindedly from and you know it. The disappearance of a two-time father is going to leave an awful big vacancy in the world. One-timers, like Bob and me, are all over the place "But Bob and you both tried to operate the machine," Albin reminded dwindling and dwindling till it hits absolute zero, like that fat old Security Council seems willing for it to do." "Take it easy, Mac," Bob Skeat said as he handed the metal box to Albin. "The Security Council is just trying to solve the problem in especially those that have a high reproductive potential. We three disagree with them we've been skulking down here nights to solve it our Albin turned it around curiously. "How?" "I sat up all last night writing the manuscript that's inside it. Look, Mac, when you go back to the Guided Missile Experiment of 1976 and push that red switch away from you, a lot of other things are going to happen than just deflecting the missile so that it will explode in the enough so that they'll get the same idea we did and try to go back to the same point in time to change them." Albin laughed. "That's just looking for trouble." in the Pacific. It tells why ours is the worst possible of futures. It's in that box." The small fat man exasperatedly hit the side of the time machine with a well-cushioned palm. "You know better. There won't be any alternate 2089 until you push that red switch on the green instrument panel. The moment you do, our world, with all its slow slide to extinction, goes Albin grimaced in annoyance. "I am recognize that simple fact. I know that if anything unexpected pops up, anything we didn't foresee, I'm supposed to come scuttling back and ask for advice." "I hope you do," Bob Skeat sighed. "I hope you do know that. A twentieth century poet once wrote something to the effect that the world will end not with a bang, but a whimper. Well, our world is ending with a whimper. Try to see that it doesn't end with a bang, either." "That I'll promise you," Albin said a trifle disgustedly. "It'll end with neither a bang nor a whimper. So long, Hugo. So long, Bob." He twisted around, reaching overhead for the lever which activated the pull the red switch toward him. Then his well-paid assignment would be done. But.... complicated words, like a letter from one bookworm scientist to another. The problems all began with the Guided Missile Experiment of 1976, he read. There had been a number of such experiments, but it was the one of 1976 that finally did the damage the biologists had been warning about. The missile with its deadly warhead exploded in the rendered much less capable of fathering or bearing offspring. Shapiro's Mumps spread over the entire planet in the next few decades. individuals were born sterile, and, of those who were not, one child was usually the most that could be expected, a two-child parent being quite rare and a three-child parent almost unknown. being was now a much-prized, highly guarded rarity. There were less than a hundred thousand of them, well below the danger point, it had been estimated, where a species might be wiped out by a new calamity. Not that another calamity would be needed. Since the end of the Epidemic, the birth rate had been moving further and further He walked to the rear dials and began the process of materializing at the crucial moment on April 18, 1976. two when he returned. If he returned. surgical robots at an unusually difficult birth, he watched the register until it rolled to rest against the notch that indicated the of morons. The problems all began with the Guided Missile Experiment of 1976, he read. There had been a number of such experiments, but it was the one of 1976 that finally did the damage the biologists had been warning virus, similar to the tobacco mosaic, had mutated under the impact of radioactivity. Five years later, it burst out of the jungle and completely wiped out every last rice plant on Earth. Japan and a large He dropped his hand on the side levers and began the process of materializing at the crucial moment on April 18, 1976. five sweating a bit at the sight of the roomful of military figures, despite the technicians' reassurances that all this would be happening too fast to be visible. He saw the single red switch pointing upward on the if a new factor showed up. He knew he should go back with this new information and have all three of them kick it around. But what would they be able to tell him, they with their blissful with whom he was completely incompatible in any but a genetic sense. Genetics! He was tired of genetics and the sanctity of human life, tired to the tip of his uncalloused fingers, tired to the recesses Albin decided that he was experiencing renunciation and felt proud. disregarding the roomful of military figures since he knew they could

<question>:
How many children did Albin have?

<options>:
A 5
B 2
C 1
D 7

<answer>:

B