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

<passage>:
"Want an asteroid in your backyard? We supply Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Bob Parker, looking through the photo-amplifiers at the wedge-shaped such a manner that the big, powerful ship was moving at the same rate as the asteroid below—47.05 miles per second. He came slogging back excitedly, put his eyes to the eyepiece. He gasped, and his big body shook with joyful ejaculations. "She checks down to the last dimension," Bob chortled, working with slide-rule and logarithm tables. "Now all we have to do is find out if she's made of tungsten, iron, quartz crystals, and cinnabar! But there couldn't be two asteroids of that shape anywhere else in the Belt, so Queazy straightened. A slow, likeable smile wreathed his tanned face. "Better take it easy," he advised, "until I land the ship and we use the atomic whirl spectroscope to determine the composition of the asteroid." Received your advertising literature a week ago. Would like to state that yes I would like an asteroid in my back yard. Must meet following specifications: 506 feet length, long enough for wedding procession 98 feet at base, tapering to 10 feet at apex 9-12 feet thick topside smooth-plane, underside rough-plane composed of iron ore, tungsten, quartz crystals, and cinnabar. Must be in my back yard before 11:30 neither Bob nor Queazy would have thought of sending an answering there was such a rigidly specified asteroid, their financial worries would be over. That they had actually discovered the asteroid, using their mass-detectors in a weight-elimination process, seemed like an incredible stroke of luck. For there are literally millions of asteroids in the asteroid belt, and they had been out in space only The "asteroid in your back yard" idea had been Bob Parker's originally. Now that he and Queazy had found the asteroid, they were desperate to Now they scuffed along the smooth-plane topside of the asteroid, the came to the broad base of the asteroid-wedge, walked over the edge and "down" the twelve-foot thickness. Here they squatted, and Bob Parker happily clamped the atomic-whirl spectroscope to the rough surface. By the naked eye, they could see iron ore, quartz crystals, cinnabar, but he had the spectroscope and there was no reason why he shouldn't use it. He satisfied himself as to the exterior of the asteroid, and "May I ask what you interlopers are doing on my asteroid?" asteroid "below." He and Queazy caught up with her on the side of the asteroid they hadn't yet examined. It was a rough plane, completing the rigid qualifications Burnside had set down. and it was three times as big as her gloved hand. "I understand conditions better than you do," she said. "You want to move this asteroid from its orbit and haul it back to Earth. an asteroid that doesn't mean anything to you one way or another. But for this asteroid. Some screwball millionaire wants it for a backyard If we don't take this asteroid to Earth before June 2, we go back to the asteroid you'll save your business, but I'll meet a fate worse than double-crossed. Those boys are after this asteroid too, and they won't "It's—it's very important that this—this asteroid stay right where it There was no answer from Queazy. With sick eyes, Bob studied the oxygen indicator. There was only five pounds pressure. Five pounds! That meant he had been floating around out here—how long? Days at least—maybe weeks! It was evident that somebody had given him a dose of spastic rays, enough to screw up every muscle in his body to the Bob saw the girl now, standing a little behind Queazy, looking down at nerves. So I decided to trick him and I came out to the asteroid belt and picked out an asteroid that was shaped so a wedding could take place on it. I took the measurements and the composition, then I told of an asteroid with those measurements and made of iron ore, tungsten, and so forth. He agreed so fast he scared me, and just to make sure that if somebody did find the asteroid in time they wouldn't be able Asteroids up to a certain size belong to whoever happens to be on them, the asteroid was delivered, so he gave the order to several companies." gratified to see his and Queazy's big interplanetary hauler floating ours both travel on the HH drive—inertia-less. But the asteroid has plenty of inertia, and so they'll have to haul it down to Earth by a long, spiraling orbit. We can go direct and probably catch up with them a few hundred thousand miles this side of Earth. And we can have a fling at getting the asteroid back!" your marriage—sorry! But until we do get the asteroid back, we three asteroid back? Remember, commercial ships aren't allowed to carry like that!" He snapped his fingers. "No acceleration effects. This type of ship, necessary in our business, can stop flat, back up, ease up, move in faltering. "The asteroid—" "You have the control board, quartered the vision plate. He pointed savagely to the lower left quarter, which gave a rearward view of the dumbbell ship trailing astern. "There's your ship, Starre." He jabbed his finger at it. "I've got a the whole solution of the problem of grabbing the asteroid back lies Starre's blue eyes followed the long cable back to where it was attached around her ship's narrow midsection. She shook her head helplessly. "It just looks like a big yo-yo to me." "A yo-yo?" "Yes, a yo-yo. That's all." She was belligerent. narrow midsection. Into these eyes cables which trailed back to reinforced. The nose of the hauler was blunt, perfectly fitted for the job. Bob Parker practiced and experimented for three hours with this yo-yo of cosmic dimensions, while Starre and Queazy stood over him bursting into strange, delighted squeals of laughter whenever the yo-yo reached the end of its double cable and started rolling back up to the ship. Queazy They weren't where Bob and Queazy had calculated, as they had discovered the next day. They had expected to pick up the asteroid naked-eye distance of the Saylor brothers' ship. Below, Earth was spread out, a huge crescent shape, part of the Eastern hemisphere miles per second. And resting on the blunt nose of the ship was the "yo-yo." lengths of cable behind it as it unwound, hurled itself forward like a fantastic spinning cannon ball. "It's going to hit!" exactly the same method of catching the "yo-yo" on the blunt nose of the ship as a baseball player uses to catch a hard-driven ball in his glove—namely, by matching the ball's speed and direction almost But by the time the "yo-yo" was flung at them again, this time with better calculations, they managed to put the firmly held asteroid between them and the deadly missile. But it was clumsy evasion, for the asteroid was several times as massive as the ship which was towing Saylor brothers' ship crumple like tissue paper crushed between the hand. The dumbbell-shaped ship, smaller, and therefore stauncher due to the principle of the arch, wound up again, wobbling a little. It had received a mere dent in its starboard half. "What do you damned fools think you're trying to do?" he roared. "You've crushed in our stern section. You've sliced away half of our with a strangled yell. The "yo-yo" struck again, but Bob Parker maneuvered its speed in

<question>:
Why are Quezy and Bob investigating the asteroid?

<options>:
A To see if it matches the specifications of the person who ordered it.
B To investigate the ship that's been parked on it.
C To check what minerals and ores are present in it.
D To check its overall dimensions.

<answer>:

A