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 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 but he knew that much. There were no others. Only Irgi, alone. clinging shelter, destroying dust and germs. Irgi had discovered the mist many years ago, when it was too late to save his kind. He had flung a vast globe of transparent metal above this greatest of 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. 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 their power from, a huge block of radiant white matter that hung 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, back in the first days of space travel, after Quigg, the American research scientist at Cal Tech, discovered a way to lift a rocket ship off the Earth, and propel it to the Moon. beginning. And no one had thought anything of it when Quigg, who had made the first flight through space, died of cancer. and Venus, it began to be apparent that a lifetime of space travel meant a hideous death. Scientists attributed it to the cosmic rays, for a theory that cosmic rays were related to the birth of new life in the cosmos perhaps they were, said some, the direct cause of life. Thus by 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 the young men who believed in a short life and a merry one, kept the ships plying between Mars and Earth and Venus. Lead kept out the cosmic Cancer cases increased on Earth. It was learned that the virulent The Plague spread, and ravaged the peoples of three planets. Hospitals were set up, and precious radium used for the fight. But the barge by comparison. And mankind gave it to Valentine Emerson to take it out among the stars to find the precious radium in sufficient quantities to halt the Plague. It had not been easy to find a crew. The three worlds knew the men a single planet, if they did not perish of space cancer before their first goal. Carson Nichols, whose wife and children were dying of the salt mines, Karl Mussdorf, grudgingly agreed to go along on the promise wry-faced man named Tilford Gunn, who knew radio, cookery, and the fine "You know a better way to die, of course," replied Emerson. trap, and bellowed. A hail from the depths of the ship answered him. A The ship rocked gently as Emerson set it down on a flat, rocky plain Emerson shook his head, frowning, suddenly glad that the others had "Maybe somebody trying to speak to us," stated Nichols. must have," said Emerson softly. "The metal of our God—" "For what? How do we know what they're like? An inhabited planet "We can hope," said Emerson sharply. "Maybe they have some radium, "Something's alive," protested Emerson. "Something that spoke to us, that is controlling this green beam." "Bring us some," cried Emerson suddenly, and turned again to look out pressed in on them. "Think it's safe to go out?" asked Nichols. "Don't know," said Emerson. "Maybe it's friendly—" !" yelled Emerson. The big Earthman was lifted high into the air, squeezed until his lungs nearly collapsed. He hung limp in a gigantic tentacle as Emerson ran Emerson, while its other arms stabbed out at Gunn and Nichols, catching "Hold on," called Emerson, dodging and twisting, gun in hand, seeking a The thing dropped the Earthmen suddenly and launched it full at Emerson. Caught off guard, the Earthman lifted 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 always maintained that life would be different on other worlds. Life 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. He had been glad to find these creatures. They were someone to converse with after centuries of loneliness. But as he approached them And if he could not speak to them, they could speak to him, through 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 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 to examine their minds—" "I wonder if they've perfected this," Irgi mused. "They must be aware that the brain gives off electrical waves. Perhaps they can chart grew nebulous, then cleared. Irgi A tall, lean man in white looked out at him. His lips moved, and Irgi read their meaning. This man spoke to one named Emerson, commissioning him with a spaceship, reciting the need of radium, the dread of the 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 growth disease he did. The pictures jumbled, grew chameleonesque— Irgi stared upward at a colossal figure graven in lucent white marble. He made out the letters chiseled into the base: GEORGE WASHINGTON. He wondered idly what this Washington had done, to merit such undying fame. He must have created a nation, or saved it. He wished there were Urgians alive to build a statue to him . Why, he had the power to make himself immortal! These creatures would gladly build statues to him! True, he could not create a nation— he could save it Irgi unfastened clamps, and rolled the screen aside. He reached to a "When they realize that I am their friend, they will gladly hear my Opening the laboratory door, Irgi passed out and closed it behind him. It woke the others. They too, bellowed and screamed and sobbed, and "Got to get free," Emerson panted, straining against the wristbands. black-hearted spawn of a mismated monster did this to us. Damn him! "Not on your life," said Emerson. "You were our commander—out there, in space. We're on a planet now. Emerson. Something tells me I'd get a fortune for it, on Earth." Emerson squirmed helplessly, cursing him, saying, "What's gotten into volunteered to go with you for the radium. Me and Gunn. Nichols doesn't count. He came on account of his wife and kids. We were the only two

<question>:
Who inspired Irgi to work to help the people of earth?

<options>:
A Mussdorf
B Emerson
C Nichols
D Washington

<answer>:

D