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

<passage>:
bugs worried him then the welfare worker tried to stop the Ring Rats' feud 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 remember where he was. space, he knew, was not in the least poetic. It was hard and savage and as he thought about that, he hitched up his gun belt and struck out with a firmer tread that almost upset him. After that, he tried to that ever took to space." Dazedly, the mechanic took off his greasy cap, laid it carefully on the 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 "Thank you," said Meek, "but there's something else I'm wondering about. There was another sign out there. Something about educated bugs." "Oh, them," said the mechanic. "They belong to Gus Hamilton. Maybe belong ain't the right word because they were on the rock before Gus took over. Anyhow, Gus is mighty proud of them, although at times they sure run him ragged. First year they almost drove him loopy trying to "Sure, game. Like checkers. Only it ain't. Not chess, neither. Even worse than that. Bugs dig themselves a batch of holes, then choose up sides and play for hours. About the time Gus would think he had it figured out, they'd change the rules and throw him off again." "That doesn't make sense," protested Meek. "Stranger," declared the mechanic, solemnly, "there ain't nothing about them bugs that make sense. Gus' rock is the only one they're on. Gus thinks maybe the rock don't even belong to the Solar system. Thinks 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." "This Gus Hamilton," said Meek. "I'd like to see him. Where could I and wait around," advised the mechanic. "He'll come in sooner or later. Drops around regular, except when his he reads is the sports section. Nuts about sports, Gus is." rivalry, but all this killing! Surely they don't enjoy getting killed." have somebody to fight with. They been fighting, off and on, for years." It was Gus Hamilton. "Trouble! Hell, yes!" blustered Gus. "But I ain't the only one that's going to have trouble. Somebody sneaked over and stole the injector out of my space crate. Had to borrow Hank's to get over here. But I know who it was. There ain't but one other ring-rat got a rocket my injector will fit." there ain't no sense in you boys in Twenty-three all the time fighting Gus stared in disbelief. Gus strangled on his drink, clawed for air, wiped his eyes. ripping up space for a long time now. Time you growed up and settled Gus took another drink, glowering at Miss Perkins. "Forget it, Gus," warned Moe. "If you're thinking of energy guns at "Space polo," said Gus. "Why, how wonderful," simpered Miss Perkins. "And you boys have the spaceships to play it with." "You shut your trap," snapped Gus. "She wants us to play games, don't "Of course we wouldn't," declared Gus, solemn as an owl. "You're prejudiced," Gus told Moe. "You just don't like space polo, hair and dominated by a pair of outsize spectacles. "My opinion, sir," said Oliver Meek, "seldom amounts to much." "All we want to know," Gus told him, "is what you think of space polo." "Space polo," declared Meek, "is a noble game. It requires expert piloting, a fine sense of timing and...." "There, you see!" whooped Gus, triumphantly. "Swell," bellowed Gus. "We'll have you coach our team." "Sure," said Gus. "Old Gus Hamilton. Grow the finest dog-gone radiation moss you ever clapped your eyes on." "Then you're the gentleman who has bugs," said Meek. "Now, look here," warned Gus, "you watch what you say or I'll hang one on you." "He means your rock bugs," Moe explained, hastily. "Oh, them," said Gus. "Yes," said Meek, "I'm interested in them. I'd like to see them." "Can't get near them, then," he said. "Sure you can," said Gus. "Why not?" "Well, a spacesuit's metal and...." "Got that all fixed up," said Gus. "You come back with me and I'll let place where gravity was no more than the faintest whisper. III The bugs had dug a new set of holes, much after the manner of a Chinese checker board, and now were settling down into their respective places preparatory to the start of another game. For a mile or more across the flat surface of the rock that was Gus practically no gravity, a man had to be an expert to handle them. Meek knew now he was no expert. A half-dozen dents in his space armor was ample proof of that. mockery of space before them. Meek shrugged his shoulders, almost upsetting himself. The bugs had started the game and Meek craned forward cautiously, Crawling clumsily, the tiny insect-like creatures moved about, solemnly popping in and out of holes. side. Suddenly there was confusion on the board. For a moment a half-dozen of the bugs raced madly about, as if seeking the proper hole to occupy. Then, as suddenly, all movement had ceased. And in another moment, they were on the move again, orderly again, but retracing their movements, His breath gurgled in his throat. He knew it now! He should have known it all the time. But the mechanic had talked about the bugs playing games and so had Hamilton. That had thrown him off. Games! Those bugs weren't playing any game. They were solving was falling directly over the board on which the bugs were arrayed. He pawed and kicked at space, but still floated down, course unchanged. He struck and bounced, struck and bounced again. projection of the surface. Fighting desperately, he regained his feet. Something scurried across the face of his helmet and he lifted his hand before him. It was covered with the bugs. Fumbling desperately, he snapped on the rocket motor of his suit, shot "Gus will give me hell for this," he told himself. Gus shook the small wooden box thoughtfully, listening to the frantic scurrying within it. "By rights," he declared, judiciously, "I should take this over and dump it in Bud's ship. Get even with him for swiping my injector." "Wouldn't it, though," declared Gus. "I told you," Gus accused him, "that we hadn't got them all. You better 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 of tournament, the final battle in a feud that has been going on in feud is taken up again. But that is at an end now. In a few days 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

<question>:
Why is Gus engaged in space fighting?

<options>:
A To conquer other rocks
B Largely to ward off boredom
C Avenging his father’s feud
D To maintain his ownership of the space bugs

<answer>:

B