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 a dead planet, master of the secret of immortality. It was he whom the four men from Earth had to conquer to gain that secret—a tentacled monstrosity whom Earthly weapons could not touch. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Irgi was the last of his race. There was no one else, now there had been no others for hundreds and hundreds of years. Irgi had lost count of time dwelling alone amid the marble halls of the eon-ancient city, Only Irgi, alone. the opalescent mists that bathed the city in shimmering whiteness. They clinging shelter, destroying dust and germs. Irgi had discovered the mist many years ago, when it was too late to save his kind. the cities of the Urg and filled it with the mist, and in it he had from the far-off jungle city of Kreed had he brought the riches of the Urg and set them up. Irgi enjoyed beauty, and he enjoyed work. It was the combination of both that kept him sane. with a pale blue luminescence that glimmered upon metal rods and bars In the doorway, Irgi paused and ran his eyes about the chamber, sighing. This was his life work, this blue hum and throb. Those ten cones lifting their disced tips toward a circular roof bathed in, and drew suspended between the cones, in midair. All power did the cones and the 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 blue, was the queer block of shining metal, shimmering and pulsing. Irgi drew himself upwards, slowly turning, laving in the quivering bands of cobalt that sped outward from the cones. He preened his body in their patterns of color, watching it splash and spread over his outwards, all over his huge form. Irgi was immortal, and the blue light made him so. "There, it is done," he whispered to himself. "Now for another oval I can roam all Urg as I will, for the life spark in me has been cleansed He touched the jeweled controls, shutting the power to a low murmur. He "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." upon him. 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." "By the Block," he said to the silence about him. "There is something It was a spaceship. Emerson took his hands from the controls of the gigantic ship that hurtled through space, and wiped his sweaty palms on his thighs. His "No use to think of failure. If it hasn't, we'll die ourselves, down meant a hideous death. Scientists attributed it to the cosmic rays, for causing the unorderly growth of new cells that man called cancer, the cosmic rays were destroying the life they had created. Emerson snorted, glancing down at the controls. Beneath his steady his lips with a dry tongue and kept looking at Emerson. Emerson shook his head, frowning, suddenly glad that the others had "We'll see what his next move is," he muttered. "If he gets too fresh, The ship began to glow softly, flushing a soft, delicate green. The light bathed the interior, turning the men a ghastly hue. Gunn shivered The others crowded about him, looking out. Here the green was more vivid, intense. They could feel its surging power tingling on their desolation. Sunlight glinting on their jagged edges, made harsh God—" Mussdorf erupted laughter. "For what? How do we know what they're like? An inhabited planet Beneath it, the white towers and spires of the city reared in alien loveliness above graceful buildings and rounded roofs. A faint mist that is controlling this green beam." germs. No dust. Just clean air!" Emerson leaped to his side, staring, frowning. "No germs. No dust. Why—that means there's no disease in this place! door. He threw it open, and clean air, and faint tendrils of whitish mist came swirling into the ship. "I feel like a kid again on a Spring day back on Earth. You know, with It was coming across the square, flowing along on vast black tentacles "Don't know," said Emerson. "Maybe it's friendly—" doesn't know the meaning nearly collapsed. He hung limp in a gigantic tentacle as Emerson ran 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. 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 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 this chance to exercise his voice. "They won't be able to feel for some "I wonder if they've perfected this," Irgi mused. "They must be aware that the brain gives off electrical waves. Perhaps they can chart He slouched a little on his tentacles, squatting, gazing at the screen 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 pouring into his brain through the screen continued. The words he did Irgi stared upward at a colossal figure graven in lucent white marble. Irgi unfastened clamps, and rolled the screen aside. He reached to a red aura drifted upward from the tabletop, passing through them as if they were mist, rising upwards to dissipate in the air near the ceiling. "That will prepare their bodies for the Chamber of the Cones," he said. Opening the laboratory door, Irgi passed out and closed it behind him. It was the sweat of agony trickling down his forehead and over his eyes and cheeks that woke Emerson. He opened his eyes, then clamped them black-hearted spawn of a mismated monster did this to us. Damn him! "Maybe—maybe he's vivisecting us," moaned Nichols. "With rays or—or "You know, it's funny—but I feel great. Huh, I must've sweated all the Things are different. I want to learn the secret of those mists, Emerson squirmed helplessly, cursing him, saying, "What's gotten into

<question>:
What can we infer that Irgi is doing to himself when he bathes in the blue light created by the cones and the block?

<options>:
A He is taking a bath in ultraviolet light, which is how Urgians cleanse themselves, since their planet is now devoid of water.
B The light just feels good, kind of like warming your hands over a campfire. Since there is no one to stop him, he just basks in the light for pleasure.
C He is self-administering the treatment for space cancer, as he must do once per Urgian year.
D He is engaging in a religious purification ritual that had been done by everyone on his planet for thousands of years.

<answer>:

C