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

<passage>:
[Transcriber's Note: This etext was produced from Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Relined. Wheeze In, Whiz Out! It added, as an afterthought, in shaky, inexpert lettering: We Fix Anything. attached to a metal standard sunk in solid rock. A second sign was wired to the standard just below the metal arm, but its legend was spectacles, finally deciphered its scrawl: far beyond its size. realized, shelter was the thing. Architecture merely for architecture's The other, according to the crudely painted legend smeared above its entrance lock, was the . The rest of the rock was landing field, pure and simple. Blasters had Department, the other to the Galactic Pharmaceutical Corporation. Solar System. Slowly and carefully, Meek clumped toward the squat repair shop. Once or twice he stumbled, hoping fervently he wouldn't get the feet of his cumbersome spacesuit all tangled up. The gravity was slight, next to non-existent, and one who wasn't used to it had to take things easy and with angry, bright green patches. To right and left glinted the whirling, twisting, tumbling rocks that made up the Inner Ring, while arcing above the horizon opposed to "Like dewdrops in the black of space," Meek mumbled to himself. But he immediately felt ashamed of himself for growing poetic. This sector of space, he knew, was not in the least poetic. It was hard and savage and slight frame. dust, really, but the screen couldn't stop it all." He fumbled his hands self-consciously. "Awkward of me," he said. "It happens to the best of them," the mechanic consoled. "Saturn sweeps in clouds of the stuff. Thicker than hell when you reach the Rings. Lots of ships pull in with punctures. Won't take no time." The mechanic glowed with sudden admiration. "I don't know who you are, until just a while ago, I never had left Earth. Bookkeeper for Lunar Exports." "Bookkeeper!" yelped the mechanic. "How come a bookkeeper can handle a desk, reached out for a spacesuit that hung from a wall hook. "Afraid this job might take a while," he said. "Especially if we have to wait for parts. Have to get them in from Titan City. Why don't you go over to the Inn "Sure, game. Like checkers. Only it ain't. Not chess, neither. Even "Stranger," declared the mechanic, solemnly, "there ain't nothing maybe it's a hunk of stone from some other solar system. Figures maybe it crossed space somehow and was captured by Saturn, sucked into the Ring. That would explain why it's the only one that has the bugs. They come along with it, see." and wait around," advised the mechanic. "He'll come in sooner or later. Drops around regular, except when his worth it, either. Just ring-rats, that's all they are." "Like what?" asked Moe, fearing the worst. "Athletic events," said Miss Perkins. "Tin shinny, maybe," suggested Moe, trying to be sarcastic. She missed the sarcasm. "Or spelling contests," she said. "Games of some sort, then. Competitive games." The inner door of the entrance lock grated open and a spacesuited figure limped into the room. The spacesuit visor snapped up and a brush of grey whiskers spouted into view. demanded. "Got your message, I did, and here I am. But it better be important." of the Ring knew just exactly what kind of spacecraft the other had. "Revenuer?" with the gang from Thirty-seven." "There's something in what she says," defended Moe. "You ring-rats been ripping up space for a long time now. Time you growed up and settled down. You're aiming on going over right now and pulverizing Bud. It won't do you any good." besides, I'll get my injector back. Might even take a few things off denied. "Dang it, you must think I ain't got no sportsmanship at all. I was thinking of a real sport. A game they play back on Earth and Mars. spaceships to play it with." society." hair and dominated by a pair of outsize spectacles. "Space polo," declared Meek, "is a noble game. It requires expert piloting, a fine sense of timing and...." "There, you see!" whooped Gus, triumphantly. Drove me out of house and home, they did. They're dippy over metal. Any kind of metal, but alloys especially. Eat the stuff. They'll tromp you to death heading for a spaceship. Got so I had to move over to another rock to live. Tried to fight it out with them, but they whipped me pure "Sure you can," said Gus. "Why not?" "Well, a spacesuit's metal and...." place where gravity was no more than the faintest whisper. III preparatory to the start of another game. different, each one having served as the scene of a now-completed game. None of the diagrams made sense. They showed the patterns of three reached, some point won, some advantage gained. But so far as Meek could see from study of the diagrams there was not even a purpose or a problem, let alone a solution or a point. distance, at the same time served Man. For here, on the Inner Ring, where they had become so diluted that ordinary space armor filtered them out, they made possible the medical magic of the famous radiation moss. One of the few forms of plant life found in the cold of space, the but there still was something missing, some vital, elusive factor that And because Earth needed the moss to cure a dozen maladies and because rickety spacecraft flared, who went mad with nothing to do, with the mockery of space before them. Crawling clumsily, the tiny insect-like creatures moved about, solemnly popping in and out of holes. going back several plays beyond the point of confusion. Just as one would do when one made a mistake working a mathematical problem ... going back to the point of error and going on again from there. A mathematical problem! He knew it now! He should have known it all the time. But the mechanic out into space, heading for the rock where the lights from the ports of Hamilton's shack blinked with the weaving of the rock. thick, too, about how we should settle down and behave ourselves and all that. Otherwise Bud never would have given her that injector." He shook his head dolefully. "This here Ring ain't ever going to be the same again. If we don't watch out, we'll find ourselves being polite to one another." take another good look at your suit. The danged things burrow right into solid metal and pull the hole in after them, seems like. Sneakiest cusses in the whole dang system. Just like chiggers back on Earth." "Chiggers," Meek told him, "burrow into a person to lay eggs." "Maybe these things do, too," Gus contended. The radio on the mantel blared a warning signal, automatically tuning in on one of the regular newscasts from Titan City out on Saturn's biggest moon. The syrupy, chamber of commerce voice of the announcer was shaky with excitement and pride. "Next week," he said, "the annual Martian-Earth football game will be tonight another story has pushed even that famous classic of the "The sporting event, ladies and gentlemen, that is being talked up and the Ring for years. No one knows what started the feud. It has gotten so it really doesn't matter. The only thing that matters is that when men from sector Twenty-three meet those from sector Thirty-seven, the feud will be played out to its bitter end when the ships from the Inner Ring go out into space to play that most dangerous of all sports, space polo. For the outcome of that game will decide, forever, the supremacy of one of the two sectors."

<question>:
Which of the following is not a technology included in this story?

<options>:
A Interstellar shipping infrastructure
B Games in outer space
C Highly advanced space travel
D Time warping

<answer>:

D