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

<passage>:
Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] The only kind of gag worth pulling, I always maintained, was a cosmic one—till I learned the the group. The group thus had the appearance of a super-family and the males indulged and cared for all the children without reference to the volplas to use the fire drill and they were already utilizing the local grasses, vines and brush to build marvelously contrived tree tearing down the animal rooms and lab building. The caretakers had anesthetized all the experimental mutants, and the metabolic accelerator and other lab equipment was being dismantled. I wanted nothing around that might connect the sudden appearance of the volplas with my property. It was already apparent that it would take the volplas only a few more weeks to learn their means of survival and develop an embryonic culture of their own. Then they could leave my ranch and the fun would be on. "Well, Dad-dee, I can't!" "I've finished my work and we no longer need the buildings. I'm going to write a paper about my results." "You can't turn this old key tightly enough." on here?" My son asked, "What happened to the animals?" "Turned them over to the university for further study," I lied. "Well," he said to her, "you can't say our pop isn't a man of decision." Twenty-four hours later, there wasn't a sign of animal experimentation on the ranch. Except, of course, that the woods were full of volplas. At night, I create them that I had been calling them volplas for ten years. No, twelve. I glanced across the animal room to where old Nijinsky thrust his graying head from a cage. I had called them volplas since the day given me the idea of a flying mutant. When Nijinsky saw me looking at him, he started a little tarantella "Mother says you are eccentric. Is that true?" "Don't you know ?" learn to feed and play, perhaps to learn to fly. Meanwhile, it was clear that here was no war of dominant mutations. Modulating alleles had smoothed the freakish into a beautiful pattern. She peeked too, as she had for fifteen years, but I blocked her view when I slipped out. "Come on, you old hermit. I have a buffet on the terrace." "Our daughter says I'm eccentric. Wonder how the devil she found out." "From me, of course." boy unsaddle the horse and slap it away to the pasture. I thought, "By God, wouldn't he have a fit if he knew what I have back there in that lab! Wouldn't they all!" . Why?" "Because, dear, I said so." The boy had already raced across the terrace and jack-knifed into the pool. The cool sound of the dive sent the girl scurrying for her suit. "Is that any reason for wearing clothes? Look at him. He's a young man sooner than already." "Well, if you feel that way about it, they'll both have to start "Say, what goes with you? You've been grinning like a happy ape ever since you came out of the lab." "I told you—" "Oh, not that again! You were dangerous at any age." The best part was that no one had seen me do it. They just couldn't understand how so many snakes got there. I learned how great it can be to stand around quietly and watch people encounter the surprise that you have prepared for them." eccentric ?" I grinned. "Forgive me if I eat and run, dear. Something in the lab can't wait." The fact was that I had something more in the lab than I had bargained for. I had aimed only at a gliding mammal a little more efficient than They were also much faster than had been their predecessors in organizing their nervous activity after the slumbrous explosion of growth in the metabolic accelerator. When I returned to the lab, they were already moving about on the mattress and the male was trying to his arms out and tried to tease the spars open. They were not new. The spars had been common to the basic colony for years and were the result them in a most humanlike way. They were active, curious, playful and decidedly amorous. She pretended a hopeless sag of her pretty shoulders. "Wouldn't you When they were able to take care of themselves, I would turn them loose. There would be volpla colonies all up and down the Coast before anyone suspected. One day, somebody would see a volpla. The newspapers would laugh. Then someone authoritative would find a colony and observe them. He would conclude, "I am convinced that they have a language and speak it intelligently." The government would issue denials. Reporters would "expose the truth" and ask, "Where have these aliens come from?" The government would reluctantly admit the facts. Linguists would observe at close quarters and learn the simple volpla language. Then would come the legends. Volpla wisdom would become a cult—and of all forms of comedy, cults, I think, are the funniest. "What broadcast?" "For heaven's sake, darling," my wife complained, "I told you about broadcasts." As we stepped up on the terrace, she turned to Guy and Em. "He's out of himself explaining that when he pressed the button before him, the hatch on the third stage of the great rocket in the background would "Darling, will you please—be— quiet ?" "Yeah, Dad. Can it, will you? You're always gagging around." My wife and the kids went down to Santa Barbara for a week and I took the opportunity to slip the oldest of the males and his two females out of the lab. their arms, the spars would open and spread those glorious planes. Almost two hours went by before the male made it into the air. His playful curiosity about the world had been abandoned momentarily and he was chasing one of the girls. As usual, she was anxious to be caught so that I could not get near. Suddenly he laughed with a shrill little whoop. After that, it was a carnival. They learned quickly and brilliantly. They were not fliers they were Chronicle motored out into the hills to witness this! Of course, the volplas didn't want to return to the lab. There was a I watched them affectionately and wondered about the advisability of leaving them out here. Well, it had to be done sometime. Nothing I could tell them about surviving would help them as much as a little are very few of you left. Since you have been staying at my place, you naturally have forgotten the ways of living outdoors." "We can learn again. We want to stay here." His little face was so solemn and thoughtful that I reached out and stroked the fur on his thousand years and was bringing antique wisdom to bear. "I can get up there. I can stay for a while. How long will they be in the tree?" "Chances are they won't stay long. Keep your eye on the tree in case they leave while you are climbing." him. Their lavish affection held him up for a time, but eventually he strutted in like every human hunter. They were raptly curious about the bird. They poked at it, marveled at its feathers and danced about it in an embryonic rite of the hunt. But Later, I shared a small piece of the meat in their feast. They were gleeful and greasily amorous during the meal. When I had to leave, it was dark. I warned them to stand watches, keep the fire burning low and take to the tree above if anything approached. The male walked a little away with me when I left the fire. I said again, "Promise me you won't leave here until we've made you "The old ones of your kind told me so. Didn't they tell you?" "I can't remember any old ones. You tell me."

<question>:
Why doesn't the narrator want to tell anyone about his experiments?

<options>:
A He wants to wait until he can publish a paper about his results
B He wants to sit back and watch what happens when they're released on the world
C It is illegal to breed mutant animals, and doesn't want to get caught
D He doesn't want people to know about his work until he has perfected the new species

<answer>:

B