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

<passage>:
Norris gave up thinking about it. Eventually he would have to adjust to love them in the parlor and kill them in the kennel. It was only a At noon, he brought back another dozen K-99s and installed them in his Norris smiled mechanically. "I learned my lesson yesterday. If foot, and sure enough it wasn't. I had to leave it. It was a K-99, but "I didn't know you killed them," she said venomously. "I won't have to kill many. Besides, they're only animals." " If Delmont's falsification had been widespread, he might have to turn several of the thirty-five over to central lab for dissection and ultimate destruction. That would bring the murderous wrath of their Norris backed a few steps toward the door. Against his better judgment, Norris withered. His voice went desperate. "They assigned me to it unclaimed units is the smallest part of it. Honey, before the evolvotron, before Anthropos went into the mutant-animal business, , which Norris recognized as the theme song of a people used to elect dogcatchers. Think of it that way—I'm just a alleged F-5 intelligence. The old man offered to swear on a Bible, but Norris smiled sardonically to himself. The non-human pets were smarter O'Reilley ... authorized dealer in mutant animals ... all non-predatory thumbs. It was a cat-Q-5. It glanced curiously at the truck as Norris stopped and adjusted his spectacles. He blinked and peered as Norris "I'm Agent Norris, Mr. O'Reilley. Called you yesterday for that rundown on K-99 sales." Norris shook his head. "No. That's why I stopped by. There's some mistake on—" he glanced at his list—"on K-99-LJZ-351. Let's check it Norris grinned and drove on. A class-C couple, allowed no children couples were allowed two lesser units or one neutroid. His grin faded as he wondered which Anne would choose. The Norrises were class-C—defective heredity. to the counter while Norris followed. He got a fat binder from under "Where you going?" Norris called. animals whose serial numbers fall in the Bermuda-K-99 series for birth dates during July 2234. This is in connection with the Delmont Negligency Case. Seize all animals in this category, impound, and run to hear. He shut the door behind him, and Norris heard the lock click. proper sections of normalcy tests. Watch for mental and glandular number. This could be a ruse to bring a stop to investigations when dangerous to its owner or to others. Hold all seized K-99s who show Norris frowned at the last sentence. His district covered about two influx had been K-99s from Bermuda Factory. Forty, at least. Could he "unclaimed" inventory—awaiting destruction. Anthropos, Inc. They should be able to give him a list of all July's Bermuda K-99 serial numbers that had entered his territory, together for finding and testing forty neutroids would put him in a tight "Inspector Norris? This is Doctor Georges. We haven't met, but I Norris hesitated. "Extremely," he said. "Well, this won't take long. One of my patients—a Mrs. Sarah Glubbes—called a while ago and said her baby was sick. I must be getting absent-minded, because I forgot she was class C until I got there." He hesitated. "The baby turned out to be a neutroid. It's dying. Eighteenth order virus." "So?" "Well, she's—uh—rather a "I think so," Norris replied slowly. "But what do you want me to do? "She insists it's going to a hospital. Worst part is that she's heard of the disease. Knows it can be cured with the proper treatment—in humans. Of course, no hospital would play along with her fantasy and series, five-year-old, three-year set. Do you have one in the pound Norris thought for a moment. "I think I have "Please, Norris! This is urgent. That woman will lose her mind "Don't let me catch you falsifying a serial number." Doctor Georges laughed faintly. "I won't, Norris. Thanks a million." He Norris immediately regretted his consent. It bordered on being illegal. house in Wylo City. Only thirty-five of July's Bermuda-K-99s had was to pick up the thirty-five animals. it's got me psyched. What do you want, Norris?" "Cooperation. I'm mailing you three letters charging three Wylo citizens with resisting a Federal official—namely me "It's not funny. I've got to get those neutroids. It's in connection with the Delmont case." Norris gave him the names and addresses of the three unwilling mothers. for the fragile neuter humanoid creatures, and another for the lesser mutants, such as cat-Qs, dog-Fs, dwarf bears, and foot-high lambs that Norris kept the third locked lest his wife see its furnishings. Norris was wearing a slight frown as he inspected the room. "They've egg-multiplier, mounting them in his machine, and bombarding the gene structure with sub-atomic particles. It's tricky business. He flashes a huge enlargement of the ovum on the electron microscope sub-atomic billiards. He's got to fire alpha-particles into the gene structure and displace certain links by just the right amount. And he's got to be quick about it before the ovum dies from an overdose of radiation from the enlarger. A good operator can get one success out of seven tries. "Well, Delmont worked a week and spoiled over a hundred ova without a single success. They threatened to fire him. I guess he got hysterical. Anyway, he reported one success the next day. It was faked. The ovum had a couple of flaws—something wrong in the central nervous system's determinants, and in the glandular makeup. Not a standard neutroid ovum. He passed it on to the incubators to get a credit, knowing it wouldn't be caught until after birth." "It wasn't caught at all?" Anne asked. Norris held up the final kicking, squealing, tassel-haired doll from Norris watched disapprovingly while she fondled it. One thing he had what—" "I know what I'm saying. We're class-C on account of heart-trouble in both our families. Well, I don't care, Terry. I'm not going to waste a heart over one of these pathetic little artificial animals. We're going "You know what they'd do to us?" "If they catch us, yes—compulsory divorce, sterilization. But they won't catch us. I'll have it at home, Terry. Not even a doctor. We'll hide it." "I won't let you do such a thing." Norris climbed slowly down from the truck and wandered on into the Norris frowned with bewilderment as the scene shifted to a two-story Norris turned the set off and went to call the police. He told them Now he had enough cages for the Bermuda-K-99s. just to retch. Norris backed away. He went to the parlor and lay down on the couch. kennel-truck, meaning to get the rest of the Bermuda-K-99s so that he depart with morning. Why should he have to kill the things? The answer became glutted. The neutroids offered solace to childless women, kept them satisfied with a restricted birth rate. And why a restricted birth rate? Because by keeping the population at five billions, the

<question>:
Why does Norris need to collect the Bermuda-K-99 series?

<options>:
A It is possible one or more of them may become dangerous.
B They are female and not neuter.
C They are defective. They can only say "mamma", "pappa", and "cookie."
D They have Eighteenth order virus.

<answer>:

A