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

<passage>:
"You're all right, honey." She raised herself on her elbow and looked out through the unglazed window at the ordered streets of the great Luna Dome. "The Moon.... Jack, you did it!" He snapped his fingers. He looked like a high-school kid. "Nothin' to the U.S. copyright on this publication was renewed.] At last she was on the gangplank, entering the mouth of the spaceship—and nothing could ever stop her now. Not unless she broke down completely in front of all these hurrying, Moon-bound passengers, in plain sight of the scattered crowd which clustered on the other side of the space-field barriers. Even that possibility was denied her when two gently insistent middle-aged ladies indicated she was blocking the way.... interplanetary space, grew hot. She closed them, and for a moment gave herself up to an almost physical yearning for the Toluca Lake house—the comfort, the safety, the—the it?" He hugged her. After a time he reached down and touched her swelling waist. It was like a benediction. "He'll be born on the Moon," he whispered, "and he'll have eyes the color of all Earth when it looks out to the stars." " She'll be born on the Moon," corrected Marcia, "and her name will be Sue, and ... and she'll be almost as good as her father." why you want me to come back—ground myself, be an Earth-lubber—so I can spare you the anguish of sitting home wondering if I'll come back silly ! It's been nineteen whole years since your father died in the explosion of a Moon-rocket. Rocket motors just don't explode any more, honey! Ships travel to the Moon and back on iron-clad, mathematical orbits that are figured before the ship puffs a jet—" "The Everyone knew about the Elsinore , the 500-foot Moon-ferry that almost missed the Moon. "That," he said bitterly, "was human damnfoolishness botching up the equations. Too many lobbyists have holdings on the Moon and don't want to risk not being able to go there in a hurry. So they haven't passed legislation to keep physically unfit people off spaceships. One of the passengers got aboard the Elsinore who never realizes that certain glandular conditions are fatal in free fall." Even now she distinctly recalled the beginnings of the interplanetary cold that always seeped into the warm house when he talked about space, reached the free-fall flight, where power could be shut off, the skipper had to put the ferry into an axial spin under power, creating artificial gravity to save the worthless life of that fool. So of course he lost his trajectory, and had to warp her in as best he could, without passing the Moon or crashing into it. And of course you're not listening." "It's all so dull!" she had flared, and then, "How can I be interested in what some blundering space-jockey did?" After he'd gone—for good, he said—her anger had sustained her for a few weeks. Then, bleakly, she knew she'd go to the ends of Earth for Jack. Or even to the Moon.... Sitting rigid in the tense stillness of a rocket ship that was about to leap from Earth, Marcia started as an officer ducked his head into that will make you proud to belong to the human race." That started, and do it right now, this minute. It might already be too late ... she wished, suddenly, and for the very first time, that she'd paid more attention to Jack's ramblings about orbits and turn-over "Come along," said Miss Eagen cheerfully. She put a firm arm around Marcia's shoulder. "Just a touch of space-sickness. This way. That's out! "Please hurry, Pet." She turned to Marcia. "I've got to explain to the passengers that there won't be any free fall. Most of them are looking down . Centrifugal force, "And why not?" "Because," said Miss Eagen, and in that moment she looked almost as drawn as Jack had, "I'm supposed to be of service to the passengers at all times no matter what. If I have feelings at all, part of my job is to keep them to myself." "Very courteous, I'm sure. However, I want to release you from your sense of duty. I'm "That's quite a different situation. 'Down' exists when you're swimming. Free-fall means that everything around you is 'up.' The the 17-kesteroids begin spastic secretions is forced into the blood-stream, causing embolism and death. Not especially susceptible because their protective reflexes, through and through, are much more easily stimulated." "And the only thing that can be done about it is to supply gravity?" "Or centrifugal force (or centripetal, depending on where you're standing, but why be technical?)—or, better yet, keep those people off the ships." with the same force as gravity, and then everything will be all right." "He can do anything any space skipper has ever done, and more," said Sue Eagen, and her face glowed. "But it isn't easy. Right this minute he's working over the computer—a small, simple, ship-board computer—working out orbital and positional and blast-intensity data that would be a hard nut for the giant calculators on Earth to crack. And he's doing it in half the time—or less—than it would take the average mathematician, because he has to because it's a life-and-death slight course correction. The sighting instruments are wheeling round and round while you're checking your position. Your fuel has to be calculated to the last ounce—because enough fuel for a Moon flight, with hours of fuelless free-fall, and enough fuel for a power spin and course corrections while spinning, are two very different things. Captain McHenry won't be able to maneuver to a landing on the Moon. He'll do it exactly right the first time, or not at all." Marcia was white and still. "I—I never—" position and away again, the firing formulas get—well, complex. And the ship's course and landing approach are completely new. Instead of letting the ship fall to the Moon, turning over and approaching tail-first with the main jets as brakes, Captain McHenry is going to have to start the spin first and go almost the whole way nose-first. He'll come up on the Moon obliquely, pass it, stop the spin, turn over once to check the speed of the ship, and once again to put the tail down when the Moon's gravity begins to draw us in. There'll be two short periods of free-fall there, but they won't be long enough to bother you much. And if we can do all that with the fuel we've got, it will be a miracle. A miracle from the brain of Captain McHenry." Marcia forced herself away from the bulkhead with a small whimper of hurt and hatred—hatred of the stars, of this knowledgeable, inspired "Where are you going?" "I'm going to stop him. He can't take that chance with his ship, with Miss Eagen's firm lips shut in a thin hard line. "Do as you like," she Moon's disc. Next to it, and below, was the rear viewer, holding the shimmering azure shape of Earth. " All Earth watches me when I work, but with your eyes. " Jack had said that to her once, long ago, when he still loved her. drowsiness and unreality. But through and through that drugged, relaxed period, Jack and the stars, the Moon and Sue Eagen danced and wove. Words slipped in and out of it like shreds of melody: "A man comes to love the things he has to fight for." And Jack fighting—for his ship, for the Moon, for the new-building traditions of the great ones who would carry humanity out to the stars. Sue Eagen was there, too, and the thing she shared with Jack. Of course there was something between them—so big a thing that there was

<question>:
Who is allowed to travel to the Moon?

<options>:
A Only government officials
B Friends and family of those who live on the Moon
C The general public
D Only those working on the Moon to further humanity’s reach into the solar system

<answer>:

C