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

<passage>:
Solomon's Orbit There will, sooner or later, be problems of "space junk," and the right to dump in space. But not like this...! in Solomon's front yard and Comrades ... an ancient automobile is flying toward our space two civilians went to Solomon's verbatim, to prove their space vehicle was knocked from the sky gone as Solomon heard the noise by a capitalistic plot. Motion pictures ordered to seek other strange "Hello," said Solomon to the orbiting devices reported: "We've observed cars for weeks. Have been to Siberia for making jokes owners." "No, Mr. Solomon, we're not orbiting the world, Americans are proves ancient automobiles are of Soviet science. If television "Sure, come in," Solomon replied. caught in obvious attempt to ridicule You know I only buy cars from Solomon told the truth. He had not have to open the office, Solomon the years he'd been in the United States. "For what do they bother midnight meetings of the nation's greatest minds. The military denied back of Solomon's yard. There, 1942. Civil aviation proved they row. "Solomon, come here a moment," he shouted. Solomon vehicles. Central Intelligence swore had no projects involving motor were not dropping junk over Cuba Solomon's lead. When he in an attempt to hit Castro. Disgusted, responsibility for cars older than cars which, from the tracks, have Two were from fliers. The pilot "Twenty but these are all I have left," Solomon eagerly replied, seeing an old car flying over Los to send cars into the sky? Everyone twenty-four-hour watches for unscheduled flights not involving aircraft. "I sent them into the sky," quavered Solomon. So this is what Four he did wrong. Would they lock cars? And his business? the atmosphere ... gone. Anyone else catch it?" Negative responses came from all but Solomon told the civilians of Four . So well spread were they, that within minutes headquarters manifolds. A logical way to make to pressure from exhaust worked on a cracked engine block, so he'd used scrap manifolds to call Solomon's Orbit had its beginning Solomon, who couldn't remember rather fast. They let Solomon get a tin shed decorated like a Christmas tree with hundreds of hub caps dangling from sagging wooden rafters. The back door opened on two acres of fence of Solomon's yard, so they'll what Solomon happily agreed was and sellers alike, that he is Solomon's Fords on the left, Chevys on the right, and across the sagging back fence, a collection of honorable they'll have to wait until Solomon known as Solomon's "Classics." Where's Solomon now? Newspaper The bright sun had Solomon's the finest junk in all California. build gigantic intake and exhaust manifolds, which the Strategic Air sabbatical. Eyes closed, Solomon Command is planning to attach to a stratospheric decompression was fondling favorite memories, move anything up to what astronomers now call Solomon's Orbit, where at last count, sixteen of the can throw it into the sky, they can circling the earth. As you know, "There's Uncle Solomon, Dad," still burning their fingers trying to orbit a car. They can't figure a classic Uncle Solomon would from the manifolds. Solomon didn't tell many people about the shingles he uses for control panels, voice. As Solomon opened his eyes, how to control vacuum and pressure Solomon's junk yard. "Mr Solomon, Georgie here cars for sale?" guided tour of Solomon's yard than a short cut. "Yes, sir, here they are," announced Solomon over his shoulder. Stepping aside he made room for the boy and his father to pass, between a couple of Ford Solomon's for a last brave stand. to Solomon's prejudiced eyes missing fenders, rusted body panels, broken wheels and rotted woodwork bespoke the utter impossibility of restoration. "Are you kidding?" Georgie's Dad exploded, "Those wrecks aren't good for anything but shooting at the moon. Let's go." Not Solomon's office, his footsteps were Solomon, a figure of lonely dejection worrisome old cars, Solomon began which started Solomon to thinking engines, I bet." As Solomon told the people in before Solomon had a chance to was brought to life by Solomon Solomon had the engine waving Solomon backed his Moreland out Solomon stopped for a minute to worry. "If it works," he thought, "when I get them nearer each other, it'll go up in my face." Scanning the yard he thought of fenders, doors, wheels, hub caps and ... that was it. A hub cap would do the trick. At his age, running was a senseless than usual, Solomon took a direct route to his office. From the ceiling of hub caps, he selected a small cap from an old Chevy truck. Back at the engine, he punched a hole in the cap, through which he tied a length of strong twine. The cap was laid on the carburetor flange and stuck in place with painter's masking tape. He then bolted the exhaust manifold over the intake so the muffler connection barely touched the hub cap. Solomon stood up, kicked the manifolds with his heavy boots to make sure satisfaction of a job well done. He moved his tray of tools away and trailed the hub cap twine behind the solid body of a big old Ford station wagon. He'd read of Solomon's old eyes as what blood two with happy thoughts. If his idea worked, he would be free of wagon, to watch the engine, Solomon taking a deep breath, jerked the cord. Tired legs failed and Solomon slipped backward when the hub cap broke free of the tape and sailed through the air to clang against back, struggling to rise, Solomon rapidly disappeared into high clouds. "Yup, maybe so," said the other. Heart heavy with belief in the temporary foolishness of age, Solomon went to the hub cap, glittering the sun where it lit after bouncing off the fender. It was untied from before Solomon realized he'd not been daydreaming. In the cleared area, were two old manifold gaskets, several rusty nuts, and dirt blown smooth in a wide circle excitement for Solomon. He had steak for dinner, then sat back to consider future success. Once the the space for more profitable Fords and Chevys. All he'd have to do would be bolt manifolds from spare engines on a different car every night, and he'd be rid of it. All he resulting automatic power flow raised anything they were attached to. Solomon couldn't help but capsules, so a few old cars could get lost in the clouds without hurting anything." shingles because Solomon figured he couldn't afford to ruin four salable hub caps just to get rid of his old sedans. Each shingle was taped in place so they could be pulled off in unison with a strong pull on pretty big, so Solomon waited until bedtime before stumbling through the dark to the launching pad in watch the Essex. Solomon tightened jerk all shingles at the same time, and watched in excited satisfaction through ancient curves of four rusty manifold assemblies. Day after day, only a mile from usable parts. Each weekday night—Solomon went silently heavenward with the aid of Solomon's unique combination light with accomplishment as he thought, "In four more days, they'll all be gone." Solomon scrambled two eggs, enjoyed a newly found set of old 1954 Buick shop manuals. As usual, when the clock neared ten, he closed his manuals and let himself out the back door. faint "God Bless You," Solomon you'd have worried. The full circle of radar and communications crews Four assigned the loading dock of a meat-packing plant, but the night watchman wouldn't allow them to takeoff. Degree lines from the four Solomon reached his back door. By the time bedroom lights were out and covers under his bristly chin, a task force of quiet men was speeding on its way to surround a chicken ranch, Solomon's

<question>:
How do Solomon's flying cars work?

<options>:
A We never learn
B Combustion
C Pressure
D Hubcaps

<answer>:

C