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

<passage>:
Ninon stretched. And purred, almost. There was something lazily catlike languid, yet ferally alert. The silken softness of her There was almost the litheness of youth in her movements. No one else could see it—yet. But Ninon could! Ninon sorted through her meagre store of remembered reading. Some old Ninon wanted to smile. But smiles made wrinkles, too. She was content to would be youthful again. She would thread through the ages to come, like the cloth of years that would engarment her eternal youth. Ninon knew Ninon! the desire he felt, Ninon knew, when he saw her. He took one quick step "Ninon, my darling," he whispered huskily. Ninon did not have to make her voice throaty any more, and that annoyed "Ninon," he said, "you are so beautiful. Let me look at you for a long Again Ninon let him feel just a hint of resistance, and risked a tiny pout. "If you could just take me with you, Robert...." Robert's face clouded. "If I only could!" he said wistfully. "If there were only room. But this is an experimental flight—no more than two can Ninon said, "But that's three hours, Robert." "Yes, Ninon.... Oh, yes." The young spaceman's eyes were puzzled, hurt. "But Ninon, I've told you Ninon let her gray-green eyes narrow ever so slightly as she leaned away "... or very old, no longer the Ninon I know ... oh, all right. But you rocket-powered, restricting us to our own system. Now we have a new kind of drive. Theoretically we can travel faster than light—how many times faster we don't know yet. I'll start finding out tomorrow, with the first test flight of the ship in which the new drive is installed. If it "Will it work?" Ninon could not keep the avid greediness out of her which swept down over Ninon's shoulders. This time Ninon permitted herself a wrinkling smile. If she was right, rate at which she let all resistance ebb from her body. Ninon's arms stole around his neck. "The lights," she whispered, "and a that Ninon permitted. She ran her fingers through the young spaceman's tousled hair and shook him gently. "It's time to go, Robert," she said. Robert fought back from the stubborn grasp of sleep. "So soon?" he This brought him fully awake. "I'm sorry, Ninon. You can't!" He sat up Ninon watched him with envious eyes, waiting until he was fully alert. "Robert!" she said, and the youth paused at the sharpness of her voice. "How old are you?" "I've told you before, darling—twenty-four." chuckled. "The way you said it, Ninon, almost had me believing you. You Ninon's voice was cold. She repeated it: "I am fifty-two years old. I Ninon slapped him. For that Ninon could have killed him. As he turned to leave, her hand Ninon said, "You'll never make that flight without me.... Watch!" Venomous with triumph, Ninon's voice was harsh even to her ears. "On the Ninon laughed mirthlessly, and pressed buttons again. The screen There was no time to gloat over her victory. That would come later. Right now minutes counted. She snatched up a cloak, pushed Robert out through the door and hurried him along the hall and out into the street where his car waited. place." Robert did not offer to help her into the car, but got in first and waited until she closed the door behind her, then sped away from the curb and through the streets to the spaceport. Ninon said, "Tell me, Robert, isn't it true that if a clock recedes from The young man said gruffly, "Roughly so, according to theory." "And if the clock went away from Earth faster than the speed of light, wouldn't it run backwards?" The answer was curtly cautious. "It might appear to." "Then if people travel at the speed of light they won't get any older?" Robert flicked a curious glance at her. "If you could watch them from Earth they appear not to. But it's a matter of relativity...." Ninon rushed on. She had studied that book carefully. "And if people travel faster than light, a lot faster, they'll grow younger, won't they?" Robert said, "So that's what's in your mind." He busied himself with the past thirty years, and be a girl again. While I grow younger, too, Ninon felt again for her beta-gun as he stared at her for a long minute, The young man's words seemed to imply a secret knowledge that Ninon did staring at the ship, staring through the ports at Ninon where she lay, Joints creaking, muscles protesting, Ninon pushed herself up and out of the sling against the artificial gravity of the ship. Robert was already seated at the controls. "How fast are we going?" she asked "Barely crawling, astronomically," he said shortly. "About forty-six thousand miles a minute." "Is that as fast as the speed of light?" "Hardly, Madame," he said, with a condescending chuckle. drawn from the strain of the long acceleration. Despite herself, Ninon "Time! Wait! That's all I hear!" Ninon shrieked. "Do something!" up still more, till it could no longer be felt. But Ninon, as she She asked, "How fast are we going now?" Robert's voice sounded far off as he replied, "We are approaching the speed of light." "Make it go faster!" she cried. "Faster! Faster!" She looked out the ports again stronger that strength was flowing back into her muscles and bones. "Nearly twice light speed." "Faster!" she cried. "We must go much faster! I must be young again. Youthful, and gay, and alive and happy.... Tell me, Robert, do you feel younger yet?" Ninon lay in the acceleration sling, gaining strength, and—she knew—youth. Her lost youth, coming back, to be spent all over again. forever young and lovely. She hardly noticed the She made her voice light and gay. "Are we not going very, very fast, now, Robert?" He answered without turning. "Yes. Many times the speed of light." "I knew it ... I knew it! Already I feel much younger. Don't you feel it He did not answer, and Ninon kept on talking. "How long have we been springy vitality of a girl of twenty. And then as she watched through wheel about through space, and she knew that the ship had reached the halfway point and was turning to speed back through space to Earth, uncounted light-years behind them—or before them. And she would still continue to grow younger and younger.... Ninon felt her face go white and stiff with rage. "What do you mean?" Robert said, coldly brutal, "You're looking your age, Ninon. Every year Ninon snatched out the little beta-gun, then, leveled it and fired. And After a while Ninon got up again from the sling and made her way to the Yes, unquestionably she was younger, more beautiful. Unquestionably Time she got back to Earth. And that would be soon. She must rest more, and be ready. The light drive cut off, and the great ship slowly decelerated as it way back into the System which had borne it. Ninon watched through the But no matter—she was still Ninon. She was young and beautiful. And died away—and the ship—and Ninon—rested, quietly, serenely, while the one of the first, won't you, Robin? And you'll take me with you?" He slipped an arm around her. "Of course. You know, Nina, our scientists say that if one could travel faster than the speed of light one could live in reverse. So when we get old we'll go out in space, lived so long, to be so old in death. Space travel must be pleasant,

<question>:
How did Ninon remain so youthful into her 50s on Earth?

<options>:
A She had access to other space technologies to keep her youthful from blackmailing the Commander
B She was not youthful on Earth
C She painstakingly disciplined herself to keep wrinkles from forming
D She had travelled at light speed once before with Robert’s dad

<answer>:

C