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

<passage>:
Morgue Ship By RAY BRADBURY This was Burnett's last trip. Three more There was another dead man aboard the Sam Burnett shook his long head, trying to think clearly. Pallid and Burnett didn't move. He stood there in his rumpled white surgical who just lay on their shelves, all one hundred of them, waiting for a decent burial. "Number ninety-eight." Coming matter of fact and slow, Rice's voice from the ceiling radio hit Burnett. "Number ninety-eight," Burnett repeated. "Working on ninety-five, drunk!" Burnett peeled the gloves off his huge, red, soft hands, slapped them into a floor incinerator mouth. Back to Earth. Then spin around and salvaging any bodies still intact after the conflict. Two men. Rice and himself. Sharing a cozy morgue ship with a hundred inside, working out to the surface of Burnett's face, working under the This would be his last trip, or he'd know the reason why! "Sam!" Burnett jerked. Rice's voice clipped through the drainage-preservative shelves. Burnett stared at the tabled bodies as if they would leap to life, even while preservative was being pumped into their veins. "Sam! On the double! Up the rungs!" Burnett closed his eyes and said a couple of words, firmly. Nothing was stars, the whamming of steel-nosed bombs into elusive targets, the titanic explosions and breathless pursuits, the flags and the excited glory are always a million miles ahead. He bit his teeth together. trembling from unleashed forces between worlds. You come along in the dark quiet of death to find the wreckage plunging with all the fury of billion centuries. And they kept dancing without music until you extended the retriever-claw and culled them into the air-lock. That was all the war-glory he got. Nothing but the stunned, shivering But even a machine breaks down.... "Sam!" Rice turned swiftly as Burnett dragged himself up the ladder. Burnett caught his breath. His eyes narrowed. There was something wrong dead. Burnett didn't say anything, but he climbed the rest of the way, Burnett rubbed his jaw. "Well?" Burnett scowled uneasily and said no. Burnett said, "Lethla?" And then: "Oh, yes! Kriere's majordomo. That Burnett shrugged. More bodies, more people, more war. What the hell. What the hell. He was tired. Talk about bodies and rulers to someone "And if it does? Have we got guns aboard this morgue-ship? Are we a battle-cuiser to go against him?" "We'll radio for help?" "You're one hell of a patriot, Sam Burnett!" bloated and crushed by space pressures and heat-blasts. Fine lads who start out smiling and get the smile burned off down to the bone—" Burnett swallowed and didn't say anything more, but he closed his eyes. He stood there, smelling the death-odor in the hot air of the ship, "This is my last cargo, Rice. I can't take it any longer. And I don't necessary talking. It didn't say anything either, but Burnett knew what Burnett swallowed hard. The body had looked funny. Too dead. Now he knew why. Involuntarily, Burnett moved forward. Lethla moved like a like a dead cold star. Rice sucked in his breath. Burnett forced himself to take it easy. From biting lines into his sharp face. Rice got it out, finally. "How'd you do it?" he demanded, bitterly. "How'd you live in the void? It's impossible!" A crazy thought came ramming down and exploded in Burnett's head. of his face. He shucked it off, trailing air-tendrils that had been inserted, hidden in the uniform, ending in thin globules of oxygen. He spoke. Triumph warmed his crystal-thin voice. "That's how I did it, Earthman." Burnett laughed, too. Ironically. "First time in years a man ever came "I know you're weaponless Purple Cross regulations. And this air-lock ladder. Two long breaths later something crashed metal and glass and coils. The radio. Burnett put his shoulder blades against the wall-metal, looking at his Rice said it, slow: "Interplanetary law declares it straight, Lethla! Get out! Only dead men belong here." Lethla's gun grip tightened. "More talk of that nature, and only dead "Rather unfortunately, yes. He's still alive, heading toward Venus We were running out of fuel, food, water. Radio was broken. Capture was certain. You were coming our way we took the chance. We set a small time-bomb to destroy the life-rocket, and cast off, wearing our Rice didn't move. Burnett moved first, feeling alive for the first time Burnett scowled and smiled together. "No tricks. You'll have Kriere on board the Constellation in half an hour or I'm no coroner." "Follow me up the ladder." Burnett went up, quick. Almost as if he enjoyed doing Lethla a favor. On the way up, Burnett thought about it. About Lethla poised like a white feather at the top, holding death in his hand. You never knew whose body would come in through the star-port next. Number ninety-eight was Lethla. Number ninety-nine would be Kriere. Burnett set his teeth together, bone against bone. Help Kriere escape? alive The last trip! Yes, this could be it. Capture Kriere and end the war. But what ridiculous fantasy was it made him believe he could actually do it? Two muscles moved on Burnett, one in each long cheek. The sag in his "Very," said Burnett. would all be over. Burnett laughed through his nose. Controls moved under his fingers like trick." "Cut power! We don't want to burn him!" Burnett cut. Kriere's milky face floated dreamily into a visual-screen, "We're about fifty miles from him, catching up." Burnett turned to alive. His stomach went flat, tautened with sudden weakening fear. If Kriere could be captured, that meant the end of the war, the end eliminated. Now: Rice and Burnett against Lethla. Lethla favored because of his gun. Burnett's jaw froze tight. He could feel a spot on his shoulder-blade artery—heart. There was a way. And there was a weapon. And the war would be over and this would be the last trip. Burnett slipped from the control console. Rice replaced him grimly. Burnett strode to the next console of levers. That spot on his back Burnett smiled right back at him. What Kriere didn't know was that he Burnett jabbed a purple-topped stud. The star-port clashed open as Burnett inhaled a deep breath. Lethla watched. He watched while Burnett exhaled, touched another lever and said: "You know, Lethla, there's an old saying that only dead men come aboard the Constellation . I believe it." And the claw closed as Burnett spoke, closed slowly and certainly, all Burnett spun about and leaped. ramrod stabbed Sam Burnett, catching him in the ribs, spinning him back room swam around in Burnett's eyes, and he closed them tight and young face over him. Burnett groaned. "To hell with it." Burnett winced, and fought to keep his eyes open. Something wet and sticky covered his chest. "I said this was my last "Maybe. I dunno. Kind of nice to think of all those kids who'll never have to come aboard the Burnett was lying down, not moving, but somehow Rice was going away a dissolve. Ninety-eight: Lethla. Ninety-nine: Kriere. " One hundred. "

<question>:
How did Burnett die?

<options>:
A Betrayal by Rice
B Casualty of fight with Lethla
C Ejection into space
D Suicide

<answer>:

B