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

<passage>:
soul-tearing tunes of his fiendish piping. [Transcriber's Note: This etext was produced from planet. And when Jared Haller sent to Earth for one of the Terrestial Ranson passed the conventional electric eye and a polite robot voice books. As Ranson entered, he swung about, frowning, one hand dropping Jared Haller nodded. He was a big, rough-featured individual with gray Ranson put it directly. "Why did you require the help of T.I., Mr. police force to handle." Jared Haller's strong hands tapped nervously understood that T.I. men had the benefit of certain amazing devices, remarkable inventions, which make it easy for them to track down criminals." told what crime had taken place. This time Ranson applied the spur of "Mr. Ranson," Haller leaned forward, his face a gray grim mask, Ranson nodded, eyes intent as the pattern unfolded. "But," ... Ranson frowned ... "this is only an interesting supposition. "Suicide, insanity, heart attack." Ranson shrugged. "All perfectly For a long brittle moment Jared Haller stared out at the graceful white "Music?" Ranson echoed. "Look here, Mr. Haller, you...." "It's all right." Jared Haller grinned crookedly. "I'm not insane. Yet. Look, Mr. Ranson! There's just one clue to these mysterious deaths! And that's the music! In each instance the servants told of hearing, very faintly, a strange melody. Music that did queer things to them, even though they could hear it only vaguely. Music like none they'd ever heard. Like the devil's pipes, playing on their souls, while.... Almighty God!" Jared Haller froze, his face gray as lead, his eyes blue horror. Ranson canal boats, the staccato roar of rockets as some earth-bound freighter leaped from the spaceport. Familiar, homey sounds, these, but beneath them, like an undercurrent of madness, ran the macabre melody. There was, there had never been, Ranson knew, any music like this. It was the pipes of Pan, the chant of robots, the crying of souls in torment. It was a cloudy purple haze that engulfed the mind, it was a dark snake writhing its endless coils into the room. Neither man moved. Ranson knew all the tricks of visual hypnotism, the whirling mirror, the waving hands, the pool of ink ... but this was the hypnotism of sound. Louder and clearer the music sounded, in eerie overtones, quavering sobbing minors, fierce reverberating bass. Sharp shards of sound pierced their ears, deep throbbing underrhythm shook them as a cat shakes a mouse. "God!" Haller snarled. "What ... what is it?" fayeh bushes. It was among these, he decided, that their unknown serenader lay concealed. Suddenly the elfin melody changed. Fierce, harsh, it rose, until Ranson Turning, Ranson found himself face to face with Jared Haller. But the screamed, "Kill!" And Jared Haller obeyed. He snatched the flame-gun from his pocket, levelled it at Ranson. Whether it was the deadly melody outside, or the instinct of self-preservation, Ranson never knew, but he drove at Haller with grim The end came with startling suddenness. Ranson, twisting his opponent's Haller, a ghastly blackened corpse, toppled to the floor. conjured up pictures in Ranson's mind ... pictures of fairyland, of exquisitely beautiful scenes, of women lovely beyond imagination. All of man's hopes, man's dreams, were in that music, and it drew Ranson as childhood, the voices of those beyond life.... Ranson walked stiffly toward the source of the music, like a man drugged. As he approached the window the melody grew louder. The hypnotism of sound, he knew, but he didn't care. It was enthralling, irresistible. Like a sleepwalker he climbed to the sill, stood outlined in the tall window. Twenty feet to the ground, almost certain death ... but Ranson Ranson stepped back into the room, where the still, terrible form of Jared Haller lay. Ranson stared at it, as though seeing it for the if it had been cudgelled, Ranson slid limply to the floor. "You killed Haller," Captain Maxwell said. "And you blame it on this pursuit. Like a lean gray shadow Ranson ran, twisting, dodging, among deserted. Ranson stepped into the shadow of the clump of fragrant fayeh bushes, where the unknown musician had stood there was little danger, he felt, of patrolmen hunting for him at Haller's house. The captain had little faith in copybook maxims about the murderer cane hummed, drawing air up along the tube. He tapped the bank where the unknown musician had stood, eyes on the gauges. Molecules of matter, left by the mysterious serenader, were sucked up the tube, Ranson tapped the cane carefully upon the ground, avoiding those places where he had stood. Few people crossed this overgrown embankment, and it was a safe bet that no one other than the strange musician had been there recently. The scent was a clear one, and the dials on the tiny bits of matter left behind by the unknown. The theory behind it was quite simple. The T.I. scientists had reasoned that the sense of smell is merely the effect of suspended molecules in the air acting upon sensitive nerve filaments, and they knew that any normal human can follow a trail of some strong odor such as perfumes, or gasoline, As Ranson plunged further into the old Martian quarter, the trail grew pools, Ranson paused. The alley was a cul-de-sac, which meant that swinging of dials, R-2340-B showed up, on the low step in front of one of the dilapidated, dome-shaped houses. Ranson's eyes narrowed. So the person who had played the mad murder melody had entered that house! Might still be there! Quickly he telescoped the "electric bloodhound," outlaw and renegade, whose sole desire was the extermination of all "That's about enough of your tricks!" Ranson grated. "Come along, Dr. the T.I. man's lips. Faintly, in the distance, came the strains of soft eerie music! "Good God!" Ranson's eyes darted about the laboratory. "That ... that's the same as Haller and I...." "Exactly, Mr. Ranson." Elath Taen smiled thinly. "Listen!" The music was a caress, soft as a woman's skin. Slow, drowsy, like the hum of bees on a hot summer's afternoon. Soothing, soporific, in dreamy, crooning chords. A lullaby, that seemed to hang lead weights upon the eyelids. Audible hypnotism, as potent as some drug. Clearer with each second, the melody grew, coming nearer and nearer the laboratory. the influence of the weird dream-music. Ranson knew he should act, swiftly, while he could smile of triumph on his face. Ranson turned to the direction of about her neck in the manner of an accordian, was a square box, with keys studding its top. For a long moment Ranson stared at the dark, enigmatic girl, watched her hands dance over the keys to produce the soft lulling music. About her head, he noticed, was a queer copper

<question>:
What was the author's purpose in including the tragic encounter between Jared Haller and Mr. Ranson?

<options>:
A To show that Jared Haller and Mr. Ranson had never liked working with each other and had a tense relationship.
B To demonstrate the end to Jared Haller's career.
C To confirm that the hypnotizing melody is what has been causing deaths among the terrestrials.
D To identify exactly who had been creating the hypnotizing melody.

<answer>:

C