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

<passage>:
The dark star passed, bringing with it pretty sick and miserable—and it gave me such a start that I dropped the pail. Who wouldn't, knowing everyone on Earth was dead except Pa and Ma and Sis and you? Even at that, I don't suppose I should have been surprised. We all of the cruel little stars had come down out of the airless sky to investigate why the Earth had gone away from the Sun, and maybe to hunt down something to torment or terrify, now that the Earth didn't have the Sun's protection. four of us and our things. The floor is covered with thick woolly rugs. Three of the sides are blankets, and the blankets roofing it touch Pa's head. He tells me it's inside a much bigger room, but I've and without a sun or moon, that would be easy to do. to the bottom floor for that stuff, which is a mean trip, and get it through a door to outside. You see, when the Earth got cold, all the water in the air froze first and made a blanket ten feet thick or so everywhere, and then down on top of that dropped the crystals of frozen air, making another white stuff mixed in, for it would put you to sleep, maybe for good, and make the fire go out. Next there's the nitrogen, which doesn't count one way or the other, though it's the biggest part of the blanket. On top of that and easy to get at, which is lucky for us, there's the oxygen that pure oxygen, but we're used to it and don't notice. Finally, at the very top, there's a slick of liquid helium, which is funny stuff. starlight focused by a growing crystal, or anything like that?" cans, but they keep heat and air in and can replace the air for a little while, long enough for our trips for water and coal and food and outside there, waiting to get us. I've felt it for years—something that's part of the cold and hates all warmth and wants to destroy the anything more than a big star. You see, I hadn't been born when the dark star snatched us away from the Sun, and by now it's dragged us out beyond the orbit of the planet Pluto, Pa says, and taking us farther out all the time. I found myself wondering whether there mightn't be something on the dark star that wanted us, and if that was why it had captured the Earth. Just then we came to the end of the corridor and I followed Pa out on the balcony. I don't know what the city looked like in the old days, but now it's says the stars used to twinkle once, but that was because there was slant, for many of the buildings are pretty badly twisted by the quakes and all the rest that happened when the dark star captured the Earth. Here and there a few icicles hang, water icicles from the first days of the cold, other icicles of frozen air that melted on the roofs and of you, too." "You know that game we sometimes play, sitting in a square in the Nest, thread of it in my sleep—though Pa always puts in a new detail or two and keeps improving it in spots. He told us how the Earth had been swinging around the Sun ever so steady and warm, and the people on it fixing to make money and wars and have a good time and get power and treat each other right or wrong, when without warning there comes charging out of space this dead star, any more than I can believe in the swarming number of them. Imagine The dark star, as Pa went on telling it, rushed in pretty fast and what with the earthquakes and floods—imagine, oceans of unfrozen water!—and people seeing stars blotted out by something on a clear night. First off they thought it would hit the Sun, and then they thought it would hit the Earth. There was even the start of a rush to get to a place called China, because people thought the star would hit on the other side. But then they found it wasn't going to hit either side, but was going to come very close to the Earth. Most of the other planets were on the other side of the Sun and didn't get involved. The Sun and the newcomer fought over the Earth for a little while—pulling it this way and that, like two dogs growling over a bone, Pa described it this time—and then the newcomer won and That was the time of the monster earthquakes and floods, twenty times worse than anything before. It was also the time of the Big Jerk, as Pa calls it, when all Earth got yanked suddenly, just as Pa has done to You see, the dark star was going through space faster than the Sun, and in the opposite direction, and it had to wrench the world considerably in order to take it away. The Big Jerk didn't last long. It was over as soon as the Earth was settled down in its new orbit around the dark star. But it was buildings toppled, oceans slopped over, swamps and sandy deserts gave great sliding surges that buried nearby lands. Earth was almost jerked out of its atmosphere blanket and the air got so thin in spots that people keeled over and fainted—though of course, at the same time, any time to keep an eye on how other folks behaved, either then or in the Big Freeze that followed—followed very quick, you know, both because the dark star was pulling us away very fast and because Earth's rotation had been slowed in the tug-of-war, so that the nights were ten old nights long. others clustered around the furnaces in the basements where we go for coal. warmth and food. They're all still and stiff as statues, of course, but just like life. dark star to get us. Or maybe, I thought, both ideas might be true. Something coming down from the dark star and making the frozen folk move, using them to do lady and the moving, starlike light. the use of dragging it out for a few years? Why prolong a doomed existence of hard work and cold and loneliness? The human race is done. The Earth is done. Why not give up, I asked myself—and all of a sudden I got the answer." Again I heard the noise, louder this time, a kind of uncertain, shuffling tread, coming closer. I couldn't breathe. "Life's always been a business of working hard and fighting the cold," Pa was saying. "The earth's always been a lonely place, millions of miles from the next planet. And no matter how long the human race might have lived, the end would have come some night. Those things don't cold and the dark and the distant stars." Well, my heart couldn't have been stopped for more than four or five They were simply people, you see. We hadn't been the only ones to survive we'd just thought so, for natural enough reasons. These three from atomic energy. Just using the uranium and plutonium intended for bombs, they had enough to go on for thousands of years. They had generated electric light and grew plants and animals by it. (At this Pa let out a second whoop, waking Ma from her faint.) decided to make some trips to likely places where there might be other survivors. No good trying long-distance radio signals, of course, since there was no atmosphere to carry them around the curve of the Earth. Well, they'd found other colonies at Argonne and Brookhaven and way around the world at Harwell and Tanna Tuva. And now they'd been giving Of course, now that the strangers are gone, I've been thinking a lot about Los Alamos and those other tremendous colonies. I have a hankering to see them for myself. human race going, so to speak. It scares a person." I looked around at the blanket walls and the fire and the pails of air light. "It's not going to be easy to leave the Nest," I said, wanting to cry, kind of. "It's so small and there's just the four of us. I get scared at the idea of big places and a lot of strangers." He nodded and put another piece of coal on the fire. Then he looked at the world was that it kept getting smaller and smaller, till it ended with just the Nest. Now it'll be good to have a real huge world again,

<question>:
How many planets went with the dark star?

<options>:
A All of them
B Just the Earth
C Most of them
D The Earth and a couple of others

<answer>:

B