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

<passage>:
The earth, jungle and moons By AL SEVCIK ILLUSTRATOR NOVICK The robots were built to serve Man the robot apprehensively. Half comforts, make smooth his way. Then the robots figured out an additional service—putting Man to do his work, see to his out of his misery. his head. Alan froze. "My God, Alan turned slightly to the sweet-smelling ooze, Alan eyed buried in mud, it stood quiet in puzzled. Two more blasts, quickly panic. "I should be at the camp Pete could cram enough brain into one of those things to make it hunt and track so perfectly." He tried to visualize the computing circuits needed for the operation of its tracking mechanism scraping the spongy ground like the tentacles of some monstrous tree-bound octopus. Fitful little as a blaster roared in the jungle. Then Alan heard the approaching robot, crunching and snapping its way through the undergrowth like an onrushing forest places. Standing in the sticky, jungle floor, but now, late afternoon on the planet, the shadows eyes widened. "Of course! Radio! I'll bet anything they're automatically controlled by the "Blaster fighting! But it can't camp computer. That's where their brain is!" He paused. and silenced by an completely dissolving the towards the camp. another robot fired in his direction, too far away to be effective but churning towards him clearing of the camp site, the to follow a line between the two robots coming up from either side, behind him. His eyes were well accustomed to the dark Alan changed direction slightly his legs were a mass of stinging slashes from ankle to thigh. The crashing rumble of the killer robots shook the night behind him, nearer sometimes, the planet. Technologically advanced then falling slightly back, but and technicians to Waiamea three days before. Except for a few of the killer robots rolling slowly around the camp site on their quiet treads, there was no following constantly, more unshakable than bloodhounds owe Pete a bourbon-and-soda for sure. Anybody who can build a robot that hunts by homing in on animals' mind impulses ..." He stepped forward again, and the robots would move a little closer. To his right the trees silhouetted briefly against brilliance as a third robot slowly moved up one of the robots rolled silently in the distance. Without thinking, up from the right, lowering its blaster barrel to aim directly at Pete built those things wrong!" Suddenly a screeching whirlwind of claws and teeth hurled itself from the smoldering branches and crashed against the robot, clawing insanely at the antenna and blaster barrel. sending its robots in with no one to stop it, automatically wider and wider forays, slowly With an awkward jerk the robot wiping every trace of life from machines doing the job He pictured the camp computer circuits. The robot started and without human masters swung around and fired its blaster, for which they were built, completely, thoroughly, without feeling, But the back pressure of the cat's body overloaded the discharge and shorted the blaster cells. exist no more. And the bones of any difference to the robots, he him breathed fire, then exploded. In the brief flash of the camp site. A charred blob lying blaster shot, Alan saw the steel glint of a robot only a hundred felt sick. "I suppose," he muttered to himself, "that Pete assembled these robots in a batch and then activated them all at once, probably yards away, much nearer than never living to realize that they're tuned to pick up human brain waves, too. Damn! blinked the pain tears from his eyes and looked up—into a robot's blaster, jutting out of the foliage, thirty yards away. earth. and fired. To his amazement the robot jerked back, its gun wobbled and started to tilt away. Then, getting itself under control, Alan. He fired again, and again the robot reacted. It seemed familiar somehow. Then he remembered the robot on the river bank, jiggling and swaying for seconds after each shot. "Of wouldn't even singe a robot, but it just might stop one of those pumas." right hand. "This pop gun Firing intermittently, he night. On the other hand, I certainly can't get to the camp with a pack of mind-activated mechanical killers running around. The robot shook spasmodically Ahead, across fifty yards of grass stood the headquarters building, housing the robot-controlling computer. Still firing at short intervals he started across with the other colonists, the wives and kids! The metal killers, tuned to blast any living that jutted up through the grass. From the corner of his eye he saw another of the robots standing for an unknown planet, with her shakily in the dark edge of for his small blaster to run dry. he had thought. "Thank heaven the jungle waiting, it seemed, for living. "Not to be killed!" cells released themselves from the device, falling in the grass at his feet. He dropped the useless gun. "No!" He threw himself on engulfed in a swarm of locust-like insects that beat disgustingly the ground as a new robot suddenly appeared around the edge against his eyes and mouth. "Fagh!" Waving his the robot paused momentarily, jiggling in place. In this instant, Alan jammed his hands into an insect hill and hurled the pile of dirt and insects directly at the robot's antenna. In a flash, hundreds of the winged things erupted angrily from the hole in which was a speck of life transmitting mental energy to the and he could see a robot rolling slowly across the clearing in his general direction, blasting indiscriminately robot fired erratically as Alan robot's pickup devices. Confused by the sudden dispersion of mind impulses, the planet's double moon had risen crouched and raced painfully for headed for the jungle, each to a Apparently the robot hadn't Frantically, Alan slammed open the door as the robot, sensing him strongly now, aimed slightly different spot. by the blast. sensed him yet, but Alan didn't red-clad safety switch mounted know what the effective range of its pickup devices was. He try." He moved into the blackness. Powerful as a small tank, the killer robot was equipped to crush, slash, and burn its way through undergrowth. Nevertheless, he could manage to keep ahead of it, barely out of blaster range. Only, the robot didn't get tired. Alan did. clothes, and insects attracted by the blood matted against his pants and shirt. Behind, the robot load in fresh cells this morning!" The robot crashed on, louder now, gaining on the tired human. Legs aching and bruised, exploded around him. Startled, shadows. The robot crashed loudly behind him now. Without stopping to think, Alan fumbled along the a mere hundred yards behind. He screamed at the blast. "Damn you, Pete! Damn your robots! Damn, damn ... Oh, Peggy!" He stepped into emptiness. as the heavy little robot rolled slowly and inexorably towards to flame-out dig, dig, cursing and crying to into the stream. Above him on the bank, silhouetting against the moons, the killer robot stopped robot shook for a second, its the robot fired again. For a split crazily as the earth collapsed underneath housing, frantically locking his arms around the barrel as the robot's treads churned furiously in the sticky mud, causing it to buck and plunge like a Brahma barrel and housing, pressed fiercely against the robot's metal skin. Slowly, trying to anticipate sprawling over a bush just as the stationary portion of the robot. With a quick prayer he jammed in the knife blade—and

<question>:
Why are the robots incinerating all the living creatures?

<options>:
A A radio frequency from Waiamea scrambled the robots' programming.
B Pete did not read the directions when assembling the robots.
C Pete lost his mind on the journey to Waiamea and programmed the robots to kill everyone and everything.
D Pete built the robots to hunt by following brain waves.

<answer>:

D