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

<passage>:
Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] The most dangerous is not the outlawed murderer, who only slays men, Darkness and the chill glitter of stars. Bo Jonsson crouched on a whirling speck of stone and waited for the man who was coming to kill him. Stooping, awkward in the clumsy armor, he put the transparent plastic of his helmet to the ground. Its cold bit at him even through the insulating material. He might be able to hear the footsteps of his murderer conducted through the ground. Stillness answered him. He gulped a heavy lungful of tainted air and rose. The other might be miles away yet, or perhaps very close, catfooting too softly to set up vibrations. A man could do that when skulk around, hide ... and suffocate when his tanked air gave out. He had to be a hunter, too, and track down the other man, before he died. And if he found his enemy, he would probably die anyway. He looked about him. Nothing. No sound, no movement, nothing but the moved here, since the beginning of time when moltenness congealed into death. Not till men came and hunted each other. Slowly he forced himself to move. The thrust of his foot sent him while minimizing the effects of Jupiter's drag. Moreover, being dense clusters, they have attracted swarms of miners, so that Achilles among the leaders and Patroclus in the trailers have a start out on his own—a race of individualists, rough and noisy and jealous, but living under iron rules of hospitality and rescue. The Last Chance on Achilles has another name, which simply sticks an he didn't grate on Bo, they had been partners for several years now. They pushed through a milling crowd at the bar, rockhounds who watched one of Achilles' three live ecdysiasts with hungry eyes, and by some miracle found an empty booth. Bo squeezed his bulk into one side of the drinks. Bo was larger and heavier than most spacemen—he'd never have content to let others talk while he listened. A placid blond giant, with amiable blue eyes in a battered brown face, he did not consider himself bright, and always wanted to learn. "Because I am one at heart. Look, Bo, why don't you get over that Bo chuckled. The Company consisted of (a) the Johnny put away another couple of shots and rose. Alcohol cost plenty, but it was also more effective in low-gee. "'Scuse me," he said. "I see a target. Sure you don't want me to ask if she has a friend?" Bo shook his head and watched his partner move off, swift in the puny gravity—the Last Chance didn't centrifuge like some of the tommicker places downtown. It was hard to push through the crowd without weight to help, but Johnny faded along and edged up to the girl with his highest-powered smile. There were several other men standing around her, but Johnny had The Touch. He'd be bringing her back here in a few Bo sighed, feeling a bit lonesome. If he wasn't going to make a night A sharp noise slashed through the haze of talk and music Bo looked up. There was a tall black haired man, Venusian to judge by his kilts, arguing with Johnny. His face was ugly with anger. Johnny made some reply. Bo heaved up his form and strode toward the discussion, casually picking up anyone in the way and setting him aside. Johnny liked a fight, but this Venusian was big. As he neared, he caught words: "—my girl, dammit." "Like hell I am!" said the girl. "I never saw you before—" "Run along and play, son," said Johnny. "Or do you want me to change that diaper of yours?" That was when it happened. Bo saw the little needler spit from the the dart in his stomach. Then his knees buckled and he fell with a nightmare slowness. The Venusian was already on the move. He sprang straight up, slammed a kick at the wall, and arced out the door into the dome corridor beyond. A spaceman, that. Knows how to handle himself in low-gee. It was the only clear thought which ran in the sudden storm of Bo's head. The girl screamed. A man cursed and tried to follow the Venusian. He tangled with another. "Get outta my way!" A roar lifted, someone slugged, someone else coolly smashed a bottle against the bar and lifted the jagged end. There was the noise of a fist meeting flesh. Bo had seen death before. That needle wasn't anesthetic, it was poison. place to hide his enemy was not there. He turned the thought over in a mind which seemed stiff and slow. By crossing that little plain he was exposing himself to a shot from one of its edges. On the other hand, he could just as well be bushwhacked from a ravine as he jumped over. And this route was the fastest for completing his search scheme. The Great Bear slid into sight, down under the world as it turned. He reaching to a saw-toothed bluff at its farther edge. He moved with flat low-gee bounds. Besides the danger of springing off the asteroid entirely, there was its low acceleration to keep a man near the ground jump up a few feet and it would take you a while to fall back. It was utterly silent around him. He had never thought there soundless shower of chips. The bullet ricocheted flatly, heading off Bo stood unmoving an instant, fighting the impulse to leap away. He was he wasn't used to this environment, and if he jumped high he could be riddled as he fell slowly down again. Sweat was cold on his body. He squinted, trying to see where the shot had come from. Suddenly he was zigzagging off across the plain toward the nearest edge. Another bullet pocked the ground near him. The sun rose, a tiny heatless dazzle blinding in his eyes. Fire crashed at his back. Thunder and darkness exploded before him. He lurched forward, driven by the impact. Something was roaring, echoes clamorous in his helmet. He grew dimly aware that it was himself. Then There was a knife in his back, it was white-hot and twisting between the ribs. He stumbled over the edge of the plain and fell, waking when his armor bounced a little against stone. Breath rattled in his throat as he turned his head. There was a white plume standing over his shoulder, air streaming out through the hole might get too tired at the critical moments. Bo knew he wouldn't be he reached Luna. He was too slow and clumsy with words his comforting It hardly seemed to matter that the Guards office reported itself unable to find the murderer. A single Venusian should have been easy to trace on Achilles, but he seemed to have vanished completely. Bo shrugged, not caring much. "I'll circulate an ad if you want, but—" Drake had come to Achilles to pick up Bo had heard of it in the course of Bo went at his share of the job doggedly, checking and re-checking Bo relaxed against the thrust, thinking of Achilles falling away behind Bo clamped his teeth together, as if he would grip consciousness in The plastic patch stuck to his metal gauntlet. He peeled it off, trying not to howl with the fury ripping in his nerves. His body was slow, Redness flamed before his eyes, red like Valeria's hair blowing across the stars. It was sheer reflex which brought his arm around to slap the Bo's mind wavered back toward life. He opened the valves wide on his to lie on naked rock while the enemy hunted him. Bo shuddered and have spent most of its force punching through the armor, caromed off the inside, scratched his ribs, and fallen dead. Next time he probably

<question>:
How does the enemy ultimately end up wounding Bo?

<options>:
A He pushes him off of the edge of the meteor, and that causes Bo to drift off into space
B He shoots Bo.
C He throws a knife and stabs Bo in the back.
D He sneaks up behind him and attacks him.

<answer>:

C