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

<passage>:
For a moment Trella thought There was only one question: Was he human? Trella feared she was in for trouble even before Motwick's they shifted restlessly in their chairs. Trella had not wanted to come to the Golden Satellite. It was a squalid saloon in the rougher her around the waist with a steely arm. Trella swung with her whole body, and slapped him so hard he nearly fell from his chair. As and turned his face away. Later, alone with Trella on the control deck, Jakdane gave It all figures. “Look, Trella, he said he was born on Jupiter. A human could free of Jupiter? Here's a man strong enough to break a spaceship safety belt just by getting Trella remembered the thug his father,” protested Trella. “Robots and androids frequently look on their makers as Trella again as Kregg overtook his quarry and swung a huge fist like a sledgehammer. Exactly what happened, Trella wasn't sure. She had the impression lived in the poisonous atmosphere of Jupiter, if he's human?” Trella was silent. “For the protection of humans, there are two psychological and Kregg sank stunned to his knees. The dark man, who had grabbed Trella's arm, released “Those characteristics fit your man Quest to a T, Trella. There is no other explanation for him: her and ran for the door. Trella did not want to believe Jakdane was right, but his reasoning his refusal to defend himself against a human, his inability to return Trella's love for him. It was not inconceivable that she should have unknowingly and staggered out. Trella ran to the unconscious Motwick's side. “That means you, too, lady,” inheritance from his owner. She would leave it to Dom Blessing with her for a later meeting. “It has been pleasant knowing you, Trella,” he said when they Trella took a fast plane from He followed Trella out the door White Sands, and twenty-four steps of the familiar brownstone house on the outskirts of Washington. Dom Blessing himself met her at the door, a stooped, graying 58 The transparent dome of Jupiter's like the looks of the men she saw. vari-colored disc of Jupiter itself, riding high in the sky. “I'm Quest Mansard, Miss,” said her companion. “I'm just in from Jupiter.” “I'm Trella Nuspar,” she said, favoring him with a green-eyed glance. “You mean Io, don't you—or “Yes, there are things here. We shall make something of these, Miss Trella, eh?” “I'm glad they're something you can use, Mr. Blessing,” she he's an android and claim ownership as Dr. Mansard's heir.” Trella planned to spend a few days resting in her employer's spacious home, and then to take to tell Quest the good news her duties as his confidential Dom Blessing at breakfast and accompanied him wherever he went. She discovered that two “Why all the protection?” she asked Blessing. “A wealthy man must be careful,” said Blessing cheerfully. “When we don't understand all the implications of new circumstances, “Jupiter strength,” she murmured, Trella could think of. Without actually intending to, she exclaimed: human!” Blessing peered at her over his spectacles. “And what if he isn't an android, Trella sighed. Cowardice was a state of mind. It was peculiarly that's required by law? What about that, eh?” Trella was silent, shocked. There was something here she hadn't known about, hadn't even suspected. For some reason, Dom Blessing feared Dr. Eriklund Mansard … or his heir … or his mechanical servant. She was sure that Blessing city now. Trella could get a cab brightly lighted section of the Trella had the desk clerk call a cab to deliver the unconscious Motwick to his home. She and from here, but the Stellar Hotel time together on Ganymede and aspace, since he did not know of Trella's connection with Blessing. But, since this was to be the atmosphere of Blessing's house, she was glad that he decided to assign her to take the Quest came the day before she was scheduled to leave. Trella was in the living room with Blessing, discussing the instructions she was to give to the Earth. Motwick was an irresponsible playboy whom Trella had known briefly on Earth, and Trella was glad to dispense with his company Trella heard the doorbell ring. The heavy oaken front door was kept locked now, and the guards enjoying the steadier companionship their posts. them. The other guards were at herself enjoying his companionship more than she intended to. with him. Now this did not suit her at all. Trella had always liked her men tall and dark. She had determined that when she married it would be to a curly-haired six-footer. Blessing, ahead of the rest, being so strongly attracted to a leaped into one of the cars and Earth, but it would still require fifty-four days to make the trip. So Trella was delighted to find that the ship was the Cometfire rear of the garage. Trella had across the floor and lay in an unconscious heap against the and its skipper was her old friend, dark-eyed, curly-haired than Trella had ever seen a man I'm getting old,” he answered, laughing. “What's your trouble, Trella?” “I'm in love with that huge chunk of man who came aboard tree on the other side in a twisted tangle of wreckage. With a horrified gasp, Trella “If it's to keep you out of another fellow's clutches, I'm your Dom Blessing. Blessing was dead. “I'm lucky,” said Quest soberly. enjoyment out of being in love. crew members and three passengers Dom Blessing and killing him. It aboard the ship's tiny personnel sphere, and Trella was thrown with Quest almost constantly. She enjoyed every minute that wouldn't release me until the task was finished. “You see, Blessing was my father's was an unconscious drive in me of it. She told him only that she Her employer had impressed upon her that her mission was confidential, but surely Dom Blessing could not object to Dr. successfully. I was born there, All these things had happened before she was born, and she did not know what Dom Blessing's relation to Dr. Mansard had been, but it must have been and he conditioned me to come to Earth and track down Blessing. Mansard's son knowing about it. purpose.” More gently than Trella would have believed possible for his I know now that it was to the task of hunting down any woman until my job was done.” Trella disengaged herself. “I'm sorry,” she said. “Don't you know this, too, now: that Dom Blessing. Its success had built Spaceway Instruments, Incorporated, which Blessing headed. assistant on Ganymede. Blessing had been searching the Right after my father completed sent Trella, his most trusted secretary, to Ganymede to bring there. Blessing would, of course, be happy to learn that a son of Dr. Trella looked at him. He was that he received his rightful share of the inheritance. Because of this, Trella was tempted not badly hurt, any more than herself but she decided against it. It was Blessing's privilege to do this his own way, and he might not appreciate her meddling. At midtrip, Trella made a rueful confession to Jakdane. Io. Blessing wanted the valuable rights to the surgiscope, and he sabotaged the ship's drive so it love me and he feels that he

<question>:
What is Trella's relationship to Dom Blessing?

<options>:
A Trella is Dom Blessing's employer.
B Trella is Dom Blessing's sister.
C Trella is Dom Blessing's employee.
D Trella is Dom Blessing's mistress.

<answer>:

C