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

<passage>:
Nobody in the neighborhood was surprised when Martin's mother disappeared and Ninian came to take care of him. Mothers had a way of disappearing around those parts and the kids were often better successive waves and bought or taken the women. So there was no trouble that way. Sometimes he wondered who Ninian really was. Obviously that story about her coming from the future was just a gag. Besides, if she really was his great-great-grand-daughter, as she said, why would she tell him to call her " Aunt Ninian "? Maybe he was only eleven, but he'd with Ninian, though, because when he pushed her too far, she would cry instead of mopping up the floor with him. Ninian sighed. "He's dissatisfied with the current social order and killing you is part of an elaborate plan he's formulated to change it. You wouldn't understand." "Oh, just don't ask any questions," Ninian said petulantly. "When you get older, someone will explain the whole thing to you." So Martin held his peace, because, on the whole, he liked things the way they were. Ninian really was the limit, though. All the people he knew lived in scabrous tenement apartments like his, but she seemed to think it was disgusting. to school. Very few of the neighborhood kids attended classes very regularly, so this was just routine. But Ninian didn't know that and Ninian worried all the time. It wasn't that she cared what these people thought of her, for she made no secret of regarding them as little better than animals, but she was shy of attracting attention. There spectator. When it became clear that his mother was never going to show up again, Ninian bought one of those smallish, almost identical houses that mushroom on the fringes of a city after every war, particularly where intensive bombing has created a number of desirable building sites. "This is a much better neighborhood for a boy to grow up in," she declared. "Besides, it's easier to keep an eye on you here." a one-car family hired private tutors for their kid, there must be something pretty wrong with him. So Martin and Ninian were just as conspicuous as before. But he didn't tip her off. She was grown up she were tidy, colorful Picasso and Braque prints on the walls. And every Ninian didn't know much about meals. The non-glass part of the house was of neat, natural-toned wood, with a neat green lawn in front and a neat parti-colored garden in back. Martin missed the old neighborhood, though. He missed having other kids to play with. He even missed his mother. Sure, she hadn't given she could for him, supporting him in the only way she knew how—and if respectable society didn't like it, the hell with respectable society. From Ninian and her cousins, there was only an impersonal kindness. They made no bones about the fact that they were there only to carry out a rather unpleasant duty. Though they were in the house with him, world of warmth and peace and plenty where nobody worked, except in the They came from the future. When Martin was sixteen, Raymond took him aside for the talk Ninian had promised five years before. glasses. His face was pallid, because he spent little time in the sun, "I thought, in your world, machines did all the work," Martin suggested. "I've told you—our world is precisely the same as this one!" Raymond snapped. "We just come a couple of centuries or so later, that's all. But remember, our interests are identical. We're virtually the same people ... although it is amazing what a difference two hundred odd years of progress and polish can make in a species, isn't it?" But he wasn't, for by now he had little respect left for any of his descendants. They were all exceedingly handsome and cultivated young people, with superior educations, smooth ways of speaking and out defensively, "whatever our motives, it has turned into a good thing for you. Nice home, cultured companions, all the contemporary conveniences, plus some handy anachronisms—I don't see what more you could ask for. You're getting the best of all possible worlds. Of course Ninian was a ninny to locate in a mercantile suburb where any little thing out of the way will cause talk. How thankful I am that our era has completely disposed of the mercantiles—" But Raymond rushed on: "Soon as Ninian goes and I'm in full charge, we'll get a more isolated place and run it on a far grander scale. Ostentation—that's the way to live here and now as well be as comfortable as possible while I suffer through this wretched historical stint." "So Ninian's going," said Martin, wondering why the news made him feel curiously desolate. Because, although he supposed he liked her in a remote kind of way, he had no fondness for her—or she, he knew, for her own inadequacy, Martin knew, not of sorrow. He was getting skillful at understanding his descendants, far better than they at understanding him. But then they never really tried. Ninian kissed him wetly on the cheek and said she was sure everything would work out all right and Raymond and Martin moved into a luxurious mansion in a remote area. The convenience and gadget but was crammed with bibelots and antiques, Martin accepted his new surroundings. His sense of wonder had become dulled by now and the pink pseudo-Spanish castle—"architecturally dreadful, of course," Raymond had said, "but so hilariously typical"—impressed him far less than had the suburban split-level aquarium. "No," Martin smiled, feeling rather silly, "but it would make the place difference in history. There were so many of them all through the ages." the nearly intact semi-civilized world and the uncivilized world, much the same as it had been for centuries. It was like visiting an enormous museum he couldn't seem to identify with his own time any more. The other cousins appeared to find the yacht a congenial head-quarters, largely because they could spend so much time far away from the More cousins were in residence at once than ever before, because they came for the ocean voyage. They spent most of their time aboard ship, giving each other parties and playing an they were gregarious young people for the most part, they didn't court his society. He suspected that he made them feel uncomfortable. He rather liked Ives, though. Sometimes the two of them would be alone together then Ives would tell Martin of the future world he had come from. The picture drawn by Raymond and Ninian had not been entirely proper, but that was because there were only a couple of million people left on the planet. It was an enclave for the highly privileged, highly interbred aristocracy, to which Martin's descendants belonged by virtue of their distinguished ancestry. "Rather feudal, isn't it?" Martin asked. Ives agreed, adding that the system had, however, been deliberately Everything potentially unpleasant, like the mercantiles, had been Bombed. Very thorough job." apart as the different oceans. All the cousins were young, for, though they came at different times in his life, they had all started out from the same time in theirs. Only

<question>:
Read the following passage:  "Ninian bought one of those smallish, almost identical houses that mushroom on the fringes of a city after every war, particularly where intensive bombing has created a number of desirable building sites."  What, in that passage, is symbolic?

<options>:
A "houses that mushroom on the fringes of a city after every war, particularly where intensive bombing has created a number of desirable building sites," is symbolic of the way things like the atom bomb, that leaves a mushroom cloud in its wake, are thought to have been unleashed upon the world to preserve or "create" things that will be "desirable" for society.
B "intensive bombing" is symbolic of what the descendants imagine they are doing to Martin to make sure they impart enough of their future society on him to make him agreeable to carrying on with their way of life.
C The word "bought" is symbolic of the wealth Martin is to bring to future worlds.
D "Smallish, almost identical houses," is symbolic of the way that Ninian blends in with current society.

<answer>:

A