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

<passage>:
things got tough, but could still satisfy a woman's craving to mother something small. not even from Bermuda." "I thought they were all registered," Anne said. "They are. I told her she had the wrong neutroid, but she got mad. Went and got the sales receipt. It checked with her newt, and it was from O'Reilley's pet shop—right place, wrong number. I just don't get it." "Nothing to worry about, is it Terry?" He looked at her peculiarly. "Ever think what might happen if someone started a black market in neutroids?" They finished the meal in silence. After lunch he went out again to gather up the rest of the group. By four o'clock, he had gotten all It seemed in order, although the expiration date was approaching. He started toward a bank of neutroid cages along the opposite wall, but O'Reilley was mincing across the floor to meet him. The customer had "She has a different number." of their own, could get quite attached to a cat-Q-5. The felines were emotionally safer than the quasi-human chimp-K series called "neutroids." When a pet neutroid died, a family was broken with grief but most couples could endure the death of a cat-Q or a dog-F. Class-C couples were allowed two lesser units or one neutroid. of growth hormones, trying to raise himself a harem to sell. Besides, something he had been expecting for several days. Attention All District Inspectors: Subject: Deviant Neutroid. You will immediately begin a systematic and thorough survey of all animals whose serial numbers fall in the Bermuda-K-99 series for The bio-agent waited. Again the thought of a black market troubled him. Unauthorized neutroids could mean lots of trouble. number. This could be a ruse to bring a stop to investigations when C. Franklin Norris frowned at the last sentence. His district covered about two hundred square miles. Its replacement-quota of new neutroids was around three hundred animals a month. He tried to estimate how many of July's influx had been K-99s from Bermuda Factory. Forty, at least. Could he do it in a week? And there were only eleven empty neutroid cages in his Bermuda K-99 serial numbers that had entered his territory, together with the retailers to whom the animals had been sold. A week's deadline for finding and testing forty neutroids would put him in a tight squeeze. 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?" understand?" "I think so," Norris replied slowly. "But what do you want me to do? Can't you send the neutroid to a vet?" "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 take a neutroid, especially since she couldn't pay for its treatment." "I still don't see—" "I thought perhaps you could help me fake a substitution. It's a K-48 series, five-year-old, three-year set. Do you have one in the pound that's not claimed?" it, Doctor, but you can't fake a serial number. She'll know it. And even though they look exactly alike, the new one won't recognize her. "All right, I'll call my wife and tell her to open the pound for you. "Don't let me catch you falsifying a serial number." Doctor Georges laughed faintly. "I won't, Norris. Thanks a million." He "Doctor Georges came," she told him. "He signed for the—" She stopped me —and charging one of them with assault. I tried to pick up their neutroids for a pound inspection—" Yates bellowed lusty laughter into the phone. "It's not funny. I've got to get those neutroids. It's in connection with the Delmont case." Yates stopped laughing. "Oh. Well, I'll take care of it." "That'll be all right. And listen, Yates—fix it so the charges will be dropped if they cooperate. Don't shake those warrants around unless they just won't listen to reason. But get those neutroids." "Okay, boy. Gotcha." Norris gave him the names and addresses of the three unwilling mothers. "Come on," he grunted. "Let's unload some neutroids, before I forget all about work." They went out to the kennels together. The cages were inside a with a conveyor belt leading from it to a crematory-incinerator. Norris kept the third locked lest his wife see its furnishings. The doll-like neutroids began their mindless chatter as soon as their keepers entered the building. Dozens of blazing blond heads began dancing about their cages. Their bodies thwacked against the wire mesh smiles, and cherubic faces. They were sexually neuter and never grew beyond a predetermined age-set which varied for each series. Age-sets were available from one to ten years human equivalent. Once a neutroid reached its age-set, it remained at the set's child-development level until death. "Honeymoon's off again, eh?" egg-multiplier, mounting them in his machine, and bombarding the he's got to be quick about it before the ovum dies from an overdose of had a couple of flaws—something wrong in the central nervous system's determinants, and in the glandular makeup. Not a standard neutroid wouldn't be caught until after birth." "Funny thing, he was afraid it wouldn't be. He got to worrying about dangerous. So he went back to its incubator and cut off the hormone "So it would develop sexuality. A neutroid would be born a female if they didn't give it suppressive doses of male hormone prenatally. That keeps ovaries from developing and it comes out neuter. But inspection. They'd dispose of her without even bothering to examine for malfunction. He thought it was pretty smart. Trouble was they didn't "How did they find out about it now?" tried to bite, but subsided a little when she disentangled it from the won't catch us. I'll have it at home, Terry. Not even a doctor. We'll Mrs. Sarah Glubbes, call me immediately. She's wanted for questioning." less than an hour ago, a woman—allegedly Mrs. Glubbes—burst into Doctor Georges' dining room while the family was at dinner. She was "When the doctor assured her that there was no other baby, she fired, Glubbes, the alleged intruder, "What was it?" "Neutroid trouble." out of the north. He went into the neutroid room and flicked a switch. A few sleepy chatters greeted the light. One at a time, he awoke twenty-three of the older doll-things and was obvious. Society manufactured them because killing them was permissible. Human babies could not be disposed of when the market 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 the years of the aged. Man now had a life expectancy of eighty, except that he had damn little chance of being born to enjoy it. A neutroid filled the cradle in his stead. A neutroid that never ate as much, or grew up to be unemployed. A neutroid could be killed if

<question>:
Why does Doctor George think he can substitute Mrs. Glubbes nuetroid without her noticing?

<options>:
A Neutroids can only say a few words. It won't be able to give itself away by saying the wrong thing.
B Mrs. Glubbes believes the neutroid is a human baby. She's probably crazy enough not to notice a difference.
C He plans on changing the serial number.
D Neutroids from the same series look identical.

<answer>:

D