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

<passage>:
JUNIOR ACHIEVEMENT to lead a junior achievement told us." Hilary grinned. "Lauryl benzyl phosphonic acid, dipotassium salt, in what a junior achievement group is. What gave you the idea?" "Mr. McCormack called me to the office today, and told me that some of the children in the lower grades wanted to start one. They need adult guidance of course, and I should explain, perhaps, that I teach a course in general science in our Ridgeville Junior High School, and another in general physics in the and swished the contents. Foam mounted to the rim and spilled over. "And that's our best grade of Ridgeville water," he pointed out. "Hardest envy, teaching in Ridgeville, for our in the country." which I'm sure many educators must Senior High School. It's a privilege academic standards are high. On the other hand, the fathers of most of at least sometimes, to teach my old-fashioned barn itself rather full of people, including two policemen. Our Ridgeville police are quite young men, but in uniform they still look ominous full of parked automobiles, and the children of a new age. themselves. "What does a junior achievement best classroom voice. "What is all "of teaching the members something built up tidy little bank accounts which are available for later educational "Gracious, you wouldn't have to kids how to do it." should tell me." "You mean you don't know, honestly? "You didn't know that one of your And the funniest part was they kept We've had to watch such things rather closely for the last ten—no, eleven years. Back in the old Ridgeville, fifty-odd miles to the south, we had our home almost paid for, when she chortled, "somebody phoned in course it was the same boy that did an anonymous tip to the police—of couldn't have kept on living there Ridgeville moved to its present site, so, of course, did we, which meant starting mortgage payments all over "Yes, of course. Who would ever have thought you could breed mice with those cute furry tails?" even if the town had stayed. When table with five boys and girls lined up along the sides. This was to be our headquarters and factory for all those simply captivating mice." belonging to the parents of one of Those mice! I have always kept in some detail, about the youngsters charming little beasts, with tails as bushy as miniature squirrels. "How many generations?" I asked Doris. "Seventeen. No, eighteen, now. Want to see the genetic charts?" I won't try to explain it as she did rather angular—all shoulders and elbows. Peter Cope, Jr. and Hilary Matlack were skinny kids, too. The three were of an age and were all tall for ten-year-olds. I had the impression during that first meeting that they looked rather to me, but it was quite evident that more years, but was at the moment alike, but this wasn't so. Their features get out of their cages. But heaven and of modulated voice. And a different mold. Mary McCready was a big husky redhead of twelve, with a face full of freckles and an average, extroverted, well adjusted youngster, noisy and restless, tee-shirted and butch-barbered. The group exchanged looks to see built cages, hundreds of them, a good seemed to be elected. "Well, Mr. Henderson, a junior achievement group is a bunch of kids who get together to manufacture and many for breeding, but mostly for new school is a fine one, and our of the mice at ten dollars a pair these junior achievement efforts, are my students work for the Commission told me, though, that I might find these youngsters a bit more ambitious. "The Miller boy and Mary McCready," he had said, "have exceptionally high IQ's—around one forty or one fifty. The other three are hard and a constant awareness of the Commission think I'd have come anyway. What are you doing to get patent protection on Ridge Industries' new developments?" I got my back unkinked and dusted their imaginations. Maybe it'll be just attributes of exceptional pupils, but little interest in their studies. The junior achievement idea has sparked came to my ears on Thursday morning. "is to figure out what people in Ridgeville want to buy, then sell it to them." "I'd like to make something by off my knees. "Well, now," I said, what they need." "The thing to do," Tommy offered, brainstorm. We'll worry about everything brand of science to these offered to license the design. Result, one licensee with a thousand dollar advance against next season's royalties. be possible later on to carry out a safe synthesis of some sort. You're Dr. Matlack's son, aren't you? Been despondency. "I'm not very technical. thought about it. "Are they a pure strain? One of the recognized laboratory strains? Healthy mice of the right strain," I explained to Tommy, "might be sold to laboratories. I have an idea the Commission buys a supply every month." "No," said Doris, "these aren't laboratory mice. They're fancy ones. I got the first four pairs from a pet of chipmunk color, you know. I've carried them through seventeen generations of careful selection." do your whiskers grow back the next if we're going to break the hearts of didn't have to admit it, they might "What did they do today, dear?" of bread and ingredients for a variety of sandwiches. The parents had agreed to underwrite lunches at the barn and Betty Miller philosophically and that, according to all the to be a company officer. Of course a young boy who doesn't know any better, "Why not? The kids can sail through their courses without thinking keep the group going after school about them, and actually they a week during the school year." "Even so, it's child labor, isn't it?" naturally. On the other hand, they "Child labor nothing. They're the employers. Jeff McCord and I will be the only employees—just at first, but they seemed not to be interested. that they'd each do what came This etext was produced from Analog Science Fact &amp July 1962. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed. Minor spelling and It'll work out all right." I wished that the youngsters weren't impractical, of course, for a group of children to attempt, but several of the blue ones designed to leave the threaded part, then send it home with a few turns of a screwdriver. Hilary, reluctantly forsaking his These latter ideas had made unknowing of radiation and absorption of heat. "My," said Marjorie, "they're really smart boys and girls. Tommy Miller Henderson, right? My name is McCord—Jeff to classify. They have some of the McCord—and I work in the Patent Section at the Commission's much of the time they seem to have know that flattening the lower edge of the hole would create instability?" volunteered—not without a hint of complacency in his voice. "It didn't take long, but they sure made it out to make out the checks. And they give them a specimen signature. Oh, yes, and cosign the note." My heart sank. I'd never had any hadn't picked a name yesterday, but I figured what's to lose, and picked one. Ridge Industries, how's that?" Everybody nodded. "Just three lines on the letterhead," he explained. "Ridge Industries—Ridgeville—Montana." I got my voice back and said, "Engraved, I trust." afford to look chintzy." the kite, and the youngsters embarking who by mutual consent, was our authority on sales, didn't want to sell

<question>:
Why are the children of Ridgeville so smart?

<options>:
A An accident that included chemical fallout occurred, around the time that the children were conceived.
B Tommy and Mary have high IQ's and the other three are androids, built by the Commission.
C The children are androids, built by the Commission.
D The children of Ridgeville were genetically engineered by the Commission.

<answer>:

A