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

<passage>:
JERRY SOHL murders—and a few thousand years. He was entitled to a sense of humor, though, even in the Ultroom! HB73782. Ultroom error. Tendal 13. Arvid 6. Kanad transfer out of 1609 complete, intact, but too near limit of 1,000 and Mrs. Martin Laughton, 3495 Orland Drive, Marionville, knees hit the side of the play pen and young Laughton let out a scream—half from hurt and half from sudden lack of confidence in his child. brother." bleeding knees, squalling for all he was worth on the grass—Oh, I don't even want to think about it." him. "Are you a rich man, Mr. Laughton?" he asked. "What do you do?" The front door bell rang. He answered it. It was Dr. Stuart and inside with the other man. "This is my new assistant, Dr. Tompkins." Martin and Tompkins shook hands. "The baby—?" Dr. Stuart asked. "You'd better get him, Dr. Tompkins, if we're to take him to the hospital. I'll stay here with Mr. Laughton. How've you been, Martin?" "How's everything at the office?" "And your wife?" bill you owe me. I think it's $32, isn't that right?" opened it and started looking for his checkbook. Dr. Stuart stood by him, making idle comment until Dr. Tompkins came down the stairs with Then he was nearly bowled over by the discharge of the .30-.30. Dr. Stuart crumpled to the ground, the baby falling to the lawn. Dr. Tompkins whirled and there was a second shot. Dr. Tompkins pitched telephone. doctors. One of them was the same man who tried to take the baby this Reggie." "Where's Tiger?" spine and tossing her against the house. The car plunged on into a tree, hitting it a terrible blow, crumbling the car's forward end so "That's odd. The man who accosted Mrs. Laughton in the afternoon was "Any record of treatment on the man she shot?" knows where." Laughton. Why did he pretend to be drunk?" "What does the man have to say?" name is John Smith and he's got cards to prove it, too—for example, a an alienist." "One jump ahead of you. Dr. Stone thinks he's normal, but won't put down any I.Q. Actually, he can't figure him out himself. Smith seems "Well, if Dr. Stone says he's normal, that's enough for me." The The man who had laughingly told police his name was John Smith lay on reclining. Even as he lay, his mouth held a hint of a smile. Arvid 6—for John Smith was appeared to be listening. For a moment a look of concern crossed his face and he swung his legs to the floor and sat there expectantly. Arvid 6 knew Tendal 13 had materialized and was somewhere in the building. Eventually there were some sounds from beyond the steel cell and it," he declared. "If you carry on any more we'll never get back to the Ultroom!" "I'm sorry, Tendal," the man on the cot said. "I didn't think—" "You're absolutely right. You didn't think. Crashing that car into that tree and killing that woman—that was the last straw. You don't even deserve to get back to our era. You ought to be made to rot "I'm if it hadn't. But to unnecessarily kill—" The older man shook his head. "You could have killed yourself as well and we'd never get the job done. As it is, you almost totally obliterated me." Tendal 13 paced the length of the cell and back again, gesturing as he talked. "It was only with the greatest effort I pulled myself back together "How well I know! How sorry I am that I ever did! It was only because I was sorry for you, because someone older and more experienced than you was needed. I volunteered. Imagine that! I volunteered! Tendal 13 reaches the height of stupidity and volunteers to help Arvid 6 go back mistakes. You're just not adventurous, that's all." specifically stated we were to have as little as possible to do with these people. But at every turn you've got us more and more enmeshed with them. If that's adventure, you can have it." Tendal 13 sat down wearily and sank his head in his hands. "It was you who conceived the idea of taking Reggie right out of his play pen. 'Watch me take that I played a very minor role. 'This is my new assistant, Dr. Tompkins,' didn't even come close to getting the child. "Still you wanted to run the whole show. 'I'm younger than you,' you go back and rescue the life germ of Kanad out of each era he'd be born in." Tendal 13 turned and looked steadily and directly at Arvid 6. "Do you know what I think? I think you deliberately pushed the lever over as far as it would go I think it was." Arvid 6 flushed, turned away and looked at the floor. "What crazy things have you been doing since I've been gone?" Tendal 13 asked. Arvid 6 sighed. "After what you just said I guess it wouldn't amuse you, although it has me. They got to me right after the accident "At great length. They had a psychiatrist in to see me. He was a queer "Who do you tell them you are?" "John Smith. A rather prevalent name here, I understand. I manufactured a pasteboard called a social security card and a driver's through a million years." "Was Kanad's life germ transferred all right this time?" Tendal 13 shook his head. "I haven't heard. The transfers are getting more difficult all the time. In 1609, you'll remember, it was a case of pneumonia for the two-year-old. A simple procedure. It wouldn't work here. Medicine's too far along." He produced a notebook. "The back after it. The life germ of the head of the whole galactic system who came to the Ultroom to be transplanted to a younger body—and then sending him back beyond his original birth date—" Tendal 13 got up and commenced his pacing again. "Oh, I suppose Kanad's partly to blame, wanting rejuvenating at only 300 years. Some have waited a thousand or more or until their bones are like paper." "I just wonder how angry Kanad will be," Arvid muttered. HB92167. Ultroom Error. Tendal 13. Arvid 6. Kanad transfer Phullam 19, son of Orla 39 and Rhoda R, 22H Level M, Hemisphere B, Quadrant 3, Sector I. Arrive his 329th Day. TB92167 Arvid 6 rose from the cot and the two men faced each other. "Before we leave, Arvid," Tendal 13 started to say. "I know, I know. You want me to let you handle everything." "Exactly. Is that too much to ask after all you've done?" "I guess I have made mistakes. From now on you be the boss. I'll do whatever you say." "I hope I can count on that." Tendal 13 rang the jail buzzer. The jailer unlocked the cell door. "You remember the chief said it's all right to take him with me, Matthews," Tendal 13 told the jailer. "Yes, I remember," the jailer said mechanically, letting them both out of the cell. laughed as he saw the jailer's eyes bulge. "Arvid!" Tendal 13 walked briskly through the door, snatched Arvid 6 by the shoulders and shook him. The jailer watched stupified as the two men vanished in the middle of

<question>:
Who is Dr. Tompkins?

<options>:
A Arvid 6
B Kanad
C Reggie Laughton
D Tendal 13

<answer>:

D