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

<passage>:
Blake resumed watching. The girl's movements were a delicate blend of love and lust. Her face accompanied her body, eyes half-lidded one moment to match the languid motion of her limbs, wide and feral the dark-brown and wide-apart, the mouth sensuous, the teeth showing in a vivid white line between the half-parted purple lips. And her body was splendid. Blake had never seen anyone quite like her. He beckoned to her when the dance was over and, after slipping into Behind her, a gaudy arras hid the hut's other room. "You are here to wait for Eldoria?" she asked. Blake nodded. "And you?" She laughed. "I am here because I live here," she said. He tried to assimilate the information, but could not. Perceiving his out, and in accordance with Interstellar Law I was auctioned off along with the rest of their possessions. Eldoria bought me." Five years as a roving psycheye had hardened Blake to commercial colonization practices nevertheless, he found the present example of man's inhumanity to man sickening. "How old are you?" Blake asked. "Fourteen." "And what are you going to be when you grow up?" "My name is Deirdre." "Nathan," Blake said. "Nathan Blake." "Eldoria will be arriving soon. I must go and prepare her dais." She got up, parted the arras, and slipped into the next room. Shame flamed in Blake's cheeks, and for a moment he considered leaving then he remembered Eldoria's dance, and he went right on sitting where he and took up nearly half the floor space. It was strewn with scarlet cushions. Blake sat down upon it. Nervously he watched Eldoria slip out of her the little one," she said, laying her hand upon his knee. "She will not enter." "It's not that so much," Blake said. "What?" The warm bronze shoulder was touching his.... He rose up once in the night, thinking to find his hotel bed. His next image extended for no more than half a mile, but Blake was annoyed that he should have remembered even that much of the wretched terrain. Sabrina York did not even know the rudiments of the art of throwing off a mind-tracker. It would have done her but little good if she had, for twelve years as a psycheye had taught Blake all the tricks. Probably she had taken it for granted that the mere act of hiding out in her tracker's mind was in itself a sufficient guarantee of her incongruous, so Blake was not surprised when the Deneb 1 wasteland gave way to an expanse of boyhood meadow. Near the meadow was the house where Blake had lived at a much later date. In reality, the places were as far apart in miles as they were in years, but here in the country of his mind they existed side by side, surrounded by heterogeneous Blake. At Blake's entry he went right on smoking and watching as though the door had neither opened nor closed. He would go right on smoking and watching till Blake died and the conglomeration of place-times that constituted Blake's mind-world ceased to be. Ironically, he was watching nothing. The 3V program that had been in progress at the time of the unconscious materialization had failed to come through. The memory was a treasured one—the old man had perished in a 'copter crash several years ago—and for a long while Blake did not move. He had never been in his own mind before. Consequently he was more affected than he might otherwise have been. Finally, stirring himself, bench where he and Deirdre Eldoria had come to talk after the ceremony traced green arabesques against the blue June sky. A set of footprints slightly deeper than its predecessors indicated that Sabrina had paused by the trunk. Despite himself Blake paused there too. Pain tightened his throat when he looked at Deirdre's delicate profile had given her as a graduation present, and which she had proudly pinned upon her bodice for the whole wide world to see, made him want to cry. His self-image of two weeks ago shocked him. There were lines on Deirdre was speaking. "Yes," she was saying, "at nine o'clock. And I should very much like for you to come." Blake Past shook his head. "Proms aren't for parents. You know that as well as I do. That young man you were talking with a few minutes ago—he's the one who should take you. He'd give his right arm for the A pink flush of anger climbed into Deirdre Eldoria's girlish cheeks. booked passage for me to New Earth and paid my tuition to Trevor University?" "Please," Blake Past said, desperation deepening his voice. "You're only making everything worse. After majoring in Trevorism, you himself for what he is." Abruptly she dropped the subject. "Don't you realize, Nate," she went on a little desperately, "that I'm leaving tomorrow and that we won't see each other again for years and years?" "I'll come to New Earth to visit you," Blake said. "Venus is only a few days distant on the new ships." She stood up. "You won't come—I know you won't." She stamped her foot. "And you won't come to the prom either. I know that too. I knew it all along. Sometimes I'm tempted to—" Abruptly she broke off. "Very well then," she went on, "I'll say good-by now then." Blake Past stood up too. "No, not yet. I'll walk back to the sorority house with you." She tossed her head, but the sadness in her tarn-blue eyes belied her hauteur. "If you wish," she said. Blake Present watched them set out side by side toward the remembered halls of learning that showed in the distance. There had been other people present on the campus that afternoon, but as they had failed to register on Blake Past's mind, they did not exist for Blake Present. All that existed for Blake Present were the diminishing figures of the girl and the man, and the pain that was constricting his throat. Wretchedly he turned away. As he did so he saw the three shadows lying You know who we are!" Blake stared at them open-mouthed. Then he turned and fled. It had taken man a long time to discover that he was a god in his had not betrayed her presence. For her point of entry she had used the place-time materialization of the little office Blake had opened on Ex-earth at the beginning of his career. Unaccountably she had ransacked it before moving into a co-terminous memory-image. Even this action wouldn't have given her away, however, if the office hadn't constituted a sentimental memory. Whenever Blake accepted a case he invariably thought of the bleak and lonely little room with its entered at the same place-time and set off in pursuit. Her only advantage lost, Sabrina York was now at his mercy. Unless she discovered his presence and was able to locate his most recently materialized place-time before he over-took her, her capture was assured. Only two things bothered Blake. The little office was far in his past, and it was unlikely that anyone save the few intimate acquaintances whom he had told about it were aware that it had ever existed. How, wanted to create. Therefore, even assuming that Blake was less well-adjusted than he considered himself to be, why had he created three such malevolent super-images as Miss Stoddart, Officer Finch, and Vera Velvetskin? and let herself in the door. They also showed that she had left by the same route, so there was no reason for Blake to linger. As a matter of fact, the fascination that had brought the place into being had been replaced by an illogical repugnance. But repugnance can sometimes be as compelling a force as fascination, and Blake not only lingered but went inside as well.

<question>:
Why was Deirdre sad after she left the bench?

<options>:
A Because Eldoria had died.
B Because the young man did not ask her to prom.
C Because her parents died of dysentery.
D Because she was going to be separated from Blake.

<answer>:

D