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

<passage>:
Irgi was the last of his monster race, guardian of conquer to gain that secret—a tentacled monstrosity whom Earthly weapons could not touch. Irgi was the last of his race. There was no one else, now been no others for hundreds and hundreds of years. Irgi had lost count Only Irgi, alone. clinging shelter, destroying dust and germs. Irgi had discovered the Urg and set them up. Irgi enjoyed beauty, and he enjoyed work. It was with a pale blue luminescence that glimmered upon metal rods and bars and ten tall cones of steelite. In the doorway, Irgi paused and ran his eyes about the chamber, sighing. block possess. There was nothing they could not do, if Irgi so willed. Irgi moved across the room. He pressed glittering jewels inset in a Irgi drew himself upwards, slowly turning, laving in the quivering Irgi was immortal, and the blue light made him so. "I must speak," Irgi said as he moved along the corridor. "I have not will talk to them and tell them how lonely Irgi is." and the name and fame of Irgi means nothing to the walls of my city, nor to the Chamber of the Cones, nor even—at times—to Irgi himself." Emerson took his hands from the controls of the gigantic ship that Radium. And the Plague. It had come on Earth suddenly, had the Plague, meant a hideous death. Scientists attributed it to the cosmic rays, for the fleshy tissues of man from their piercing power. It had long been causing the unorderly growth of new cells that man called cancer, the cosmic rays were destroying the life they had created. It meant death to travel in space, and only the stupendous fees paid to Cancer cases increased on Earth. It was learned that the virulent contagious to a certain extent. The alarm spread. Men who voyaged in Hospitals were set up, and precious radium used for the fight. But the Emerson snorted, glancing down at the controls. Beneath his steady "The spectroscope'll tell us. Break it out." "You bet." Emerson twisted dials and switches. "Hell!" exploded Mussdorf. "I might have known it. Not a trace." Emerson touched his forearm gently, and shuddered. With one sweep of his brawny arm, Mussdorf sent the apparatus flying against the far wall to shatter in shards. No one said a word. The whispers grew louder and harsher. Angry. light bathed the interior, turning the men a ghastly hue. Gunn shivered "Wot's happenin' now?" choked Gunn. Great rocks lay split and tumbled over one another in a black desolation. Sunlight glinting on their jagged edges, made harsh germs. No dust. Just clean air!" "No germs. No dust. Why—that means there's no disease in this place! cancer." Mussdorf came up through the trap and passed out the sun-blasters. They buckled them around their waists while Mussdorf swung the bolts of the door. He threw it open, and clean air, and faint tendrils of whitish out of living black marble. A head that held ten staring eyes looked down at them. Six arms thrust out of the torso, moving like tentacles, fringed with cilia thick as fingers. That doesn't know the meaning of the word! I'm going to let it taste a blast—" yanked it free and upward, firing brilliant yellow jets as he jerked the trigger. "Look nearly collapsed. He hung limp in a gigantic tentacle as Emerson ran to one side, trying for a shot without hitting Mussdorf. But the thing was diabolically clever. It held Mussdorf aloft, between itself and Emerson, while its other arms stabbed out at Gunn and Nichols, catching them up and shaking them as a terrier shakes a rat. The thing dropped the Earthmen suddenly thrashing down at him. He went backwards, sickened.... Irgi stared at the things that lay on the white flagging. Queer beings they were, unlike anything Irgi had ever conceived. Only two legs, only short work of them if an Urgian cat existed any more, and Irgi had Irgi bent to wrap long arms about the queer beings, lifting them. His legs, from face and chest. The growth disease! That was bad, but Irgi knew a way to cure it. Irgi knew a way to cure anything. Perhaps the metal of the hull had in some manner made his voice audible to them, speeded up the vibrations to twelve or fifteen a second. Then there was the matter of the growth disease. He could eliminate that easily enough, in the Chamber of the Cones. But first they would have to be prepared. And the preparation—hurt. Well, better a few moments of agony than a death through a worse. their minds. Once unconscious, he could tap their memories with an electrigraph screen. That should be absorbing. It made Irgi happy, reflecting upon it, and Irgi had not known happiness for a long time. Irgi dropped his burdens. With quick tendrils he adjusted straps to them, bound them securely. From a small, wheeled vehicle he took a metal rod and touched it to their foreheads. As it met the flesh, it hummed once faintly. "It's short-circulated their nervous systems for a while, absorbed the electric charges all intelligent beings cast," Irgi said aloud, glad at time. When the worst pain will have passed, they will recover. And now to examine their minds—" He fitted metal clamps over their heads and screwed them tight. He wheeled forward a glassy screen plugged in the cords that dangled from its frame to the metal clamps. "I wonder if they've perfected this," Irgi mused. "They must be aware grew nebulous, then cleared. Irgi disease. Now he beheld the mighty salt mines where naked men swung huge picks at the crusted crystals, sweating and dying under a strange sun. Even these remnants of humanity festered with the growth. A tall, lean man in white looked out at him. His lips moved, and Irgi plague. The thoughts of this Emerson were coming in clearer, as Irgi in not understand, but the necessity for radium, and the danger of the Irgi stared upward at a colossal figure graven in lucent white marble. Irgi unfastened clamps, and rolled the screen aside. He reached to a Opening the laboratory door, Irgi passed out and closed it behind him. shut as his body writhed in pain. "Oh, Lord!" he whimpered, bloodying his mouth where his teeth sank into his lips. In every fibre of his body sharp lancets cut and dug. In arms and legs and chest and belly they twisted and tore. Into the tissues beneath his skin, all along the muscles and the bone, the fiery torment played. He could not stand it and strapped even as he. They were unconscious. What right had they to It woke the others. They too, bellowed and screamed and sobbed, and their arms and legs writhed like wild things in a trap. "That fiend," yelled Mussdorf. "That ten-eyed, octopus-legged, black-hearted spawn of a mismated monster did this to us. Damn him! Damn him! If I ever get loose I'll cut his heart out and make him eat it." "Maybe—maybe he's vivisecting us," moaned Nichols. "With rays or—or something—aagh! I can't stand it!" clanging against the tabletop as it ripped loose. Mussdorf held his arm aloft and laughed harsh triumph. "I'll have you all loose in a second," he grunted, ripping straps from his body. He leaped from the table and stretched. He grinned into their faces. Emerson squirmed helplessly, cursing him, saying, "What's gotten into

<question>:
What did Irgi do to the men in the lab?

<options>:
A Vivisected them with rays
B Prepared them for the chamber
C Burned them with fire
D Cut them with sharp lancets

<answer>:

B