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

<passage>:
Planet Stories Fall 1954. Extensive research did not uncover any evidence that exposed to his view. "Why?" he thought as he looked at her. "Why did it have to happen like this?" attacked in force. The streetlights were already on, making geometric patterns through the dusk of Central Park. Some of the billboards were shining, their relays activated by darkness-sensitized solenoids. A She would have given herself to any man— His thoughts beat a rapid crescendo, activating emotions, stimulating To any man, WHO HAPPENED TO BE THE LAST MAN ON EARTH! attacking his olfactory patch with the retching smell of decaying flesh. Charles ignored it. Even smells had lost their customary meanings. world was running well. No wonder we called it the 'Proud Era.' Life was fun, just a bowl of cherries, until...." Two years ago the animals had started dying. Strangely enough the rats had gone first, to anybody's notice. Sales of poison dropped, scientific laboratories chained to a perpetual rodent-cycle began to complain bitterly. Then the lovers who hunted out and haunted the lonely lanes through the rumors from Mexico had it that no one had died from scorpion bite in several weeks. A month later the meat animals, the birds and the household pets the Prevention of Cruelty to Animals committed suicide. Within a year it was obvious to everyone that man was the only animal left on earth. The panic which had begun with the death of the animals was quieted somewhat by the fact that humans seemed immune to the pandemic. But the lakes full of dead fish caused a great stink and residents along the coasts began to move inland. Sales of perfumes and deodorants soared. Then just one year ago, the first human became infected with the strange malady. Within six months, half of the world's population was gone. Less than a month ago no more than a few thousand people remained "I've got to find out," Charles told himself. He meant it, of course, but in a sense he was afraid—afraid that his trip to the Bureau might walked on down the bloody street. Before the plague the Bureau of Vital Statistics had been one of man's crowning achievements. Housed as it was in a huge metallic globe of a building, it contained computers which kept exact account of every human on earth. Compulsory registration and the classification of each individual by means of the discrete patterns of his brain waves had accomplished for man what no ordinary census could have. The machine knew who was alive, who was dead, and where everybody was. Once a year the Bureau issued The Index, an exact accounting of Earth's four billion inhabitants. Four billion names and addresses, compressed into microprint, a tremendous achievement even for the "Proud Era." The average person had little necessity to do so since the Bureau information service would answer questions free of charge at any time. All children had to have a brain-wave recording made by the Bureau during the first month of their life. And again at the age of 10 each child returned to the Bureau for a recheck. It was for this latter recording that Charles had come to the Bureau some twenty-two years before and a friendly guard had let him peep briefly into the computer room. The impression of intense activity, of organized confusion, of mechanical wonder had remained with him the rest of his life. "So different now," he thought, surveying the room. "Now it's empty, so dexterity he switched the computer screens on and watched them glow to life. All around the world sensitive receiving stations pulsed to activity, sending out searching fingers, hunting for elusive patterns of neutral energy, mapping and tabulating the results. screens clustered around it. On these screens could be graphed the population of any and every part of the globe. An illuminated counter immediately above it would give the numerical strength of the area Charles activated the switches that would flash a schematic map of New York on the screen. "There's bound to be somebody else left here. After all, there were at least twenty of us just a couple of days ago." And one of them, a beautiful woman, had invited him up to her apartment, not because she liked him, but because.... The main screen focused itself, the patterns shifting into a recognizable perceptual image. "Why, it was just yesterday (or was it the day before?) that ten of us, at least, met here to check the figures. There were lots of us One. The Pacific area, Asia, Australia, Asia Minor, Russia and the Near East, Africa and then Europe. England! Why? Such a simple question, but in those three letters lay the essence of human nature. Why. The drive of curiosity. Stronger, in a way, than the so-called "basic" drives: hunger, thirst, sex, shelter, warmth, companionship, elimination. Certainly more decisive in the history of the race. Man began to think, to differentiate himself from the other animals, when he first asked the question: "Why?" But thinking about "why" didn't answer the question itself, Charles thought. He looked around him. He was sitting on a bench in Central free of bodies. "You've got about ten minutes warning," he said to himself. "I guess that most people wanted to die inside of something—inside of anything. Not out in the unprotected open." The silence was like a weight hanging around his neck. Not an insect noise, not the chirp of a bird, not the sound of a car nor the scream of a plane. Not even a breeze to whisper among the leaves, he thought. Civilization equals life equals noise. Silence equals.... Why. His mind kept returning to the question. Of all the people on earth, me. The last. Why me? Average, that's what he was. Height: 5'11". Weight: 165. Age: 32. Status: Married, once upon a time. So simple to explain by the laws of chance. No need for any underlying assumptions about good and evil, no need for teleological arguments concerning cause and effect. Simply explain it by chance. Somebody had the gravel path as he walked along it. "A hermit in the midst of a city of millions of—No, I forgot. There aren't any more people, are there?" practice up for things like this. But it ought to be good, it ought to be proper. "'In this now hallowed corner of the planet Earth—' No. That sounds too ... too...." Make it simple, he thought. And he finally wrote: to wait. "Maybe it's just a disease, and I'm immune. I was immune to smallpox. The vaccination never took. That's probably it." He smiled. Strange, but now he wanted very much to go on living, alone or not. There were things he could do, ways to keep occupied. He wouldn't mind it so much. But he wanted more and more desperately with each passing second to retain his foothold on the tenuous path of physical existence. The tantalizing thought of "why" puzzled its way back into his mind. But it seemed less pressing now that he had almost come to the conclusion that he would live for a long time. Later, in a few days opportunity for hunting down the answer. This seemed good to him, for now he thought he almost had the answer, if there were an answer. He to the restaurant. This was the way the plague began, but—His mind The large, invisible, ovular being that hung suspended over the Empire State Building rested from its exertion. Soon it was approached by another of its kind. "I can feel the emptiness of it." "It was very good. Where were you?" "On the next planet out. No beauty to it at all no system. How was yours?" "Beautiful," said the first. "It went according to the strictest semantic relationship following the purest mathematical principles. They made it easy for me." "What's that you have there?" "Oh, this?" replied the first. "It's a higher neural order compendium the Things here made up. It's what I used." "You can't take it with you, you know. They don't allow souvenirs." metal (read the names: Whit, Whita, Whitacomb). It was not until the dusty morning sun stirred up the breezes that they

<question>:
Why did the beings come to Earth?

<options>:
A it was the next planet for them to destroy
B they wanted all of Earth's resources
C they wanted to take over Earth
D they were curious about Earth's creatures

<answer>:

A