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

<passage>:
Planet of No-Return By WILBUR S. PEACOCK The orders were explicit: "Destroy the Blane and Splinter Wood, their space-ship Old Kerry Blane exploded. "Damn it!" he roared. "I don't like you and I don't like this ship of anything!" Kerry Blane growled unintelligibly, batted the injector lever with a pilots—only more so! And why the hell the chief had to sic you on me, on an exploration trip this important—well, I'll never understand." bends at any moment." Old Kerry Blane snorted, batted the box aside impatiently, scowled moodily at the capsules that bounced for a moment against the pilot room's walls before hanging motionless in the air. "Mister Wood," he said icily, "I was flying a space ship while they were changing your pants twenty times a day. When I want advice on how to fly a ship, how to cure space bends, how to handle a Zelta ray, or Kerry Blane lit one of the five allotted cigarettes of the day. before we get back to Earth." Kerry Blane made a rich, ripe noise with his mouth. gave a false impression of awkwardness. While the vitriolic Kerry Blane was short and compact, strength and quickness evident in every movement. Kerry Blane had flown every type of ship that rode in space. In the passing years, he had flight-tested almost every new experimental ship, had flown them with increasing skill, had earned a reputation as a trouble shooter on any kind of craft. But even Kerry Blane had to retire eventually. A great retirement banquet had been given in his honor by the Interplanetary Squadron. There had been the usual speeches and presentations and Kerry Blane had heard them all, had thanked the Something died within Kerry Blane's heart that morning, shriveled and space warriors. Finally, as a last resort so that he would not be thrown entirely aside, he had taken a desk job in the squadron offices. For six years he had dry-rotted there, waiting hopefully for the moment when his Blane's heart, and he had taken the youngster in hand to give him the benefits of experience that had become legendary. Splinter Wood was a probationary pilot, had been admitted to the Interplanetary Squadron because of his inherent skill, even though his formal education had been fairly well neglected. Now, the two of them rode the pounding jets of a DX cruiser, bound Interplanetary Squadron's Medical Division. "Ten to one we don't get back!" Splinter said pessimistically. Kerry Blane scrubbed out his cigarette, scowled bleakly at the ?" Kerry Blane choked Kerry Blane exploded, words spewing volcanically forth. Splinter when Kerry Blane had quieted until he but smoldered, he leaned over and "Seventy-eight what?" Kerry Blane asked sullenly, the old twinkle And in the midst of their laughter, Old Kerry Blane choked in agony, surged desperately against his bunk straps. Kerry Blane grinned, winced when he felt the dull ache in his body. His long hands played over the instrument panel, checking, controlling the rocket fire, adjusting delicate instruments to hairline marks. Kerry Blane nodded in silent approval. They could feel the first tug of gravity on their bodies, and through Kerry Blane yawned, settled back luxuriously. "I'll tell you later," he space. Far to the left, Mercury gleamed like a polished diamond in the sunlight. Kerry Blane cut the driving rockets, let the cruiser sink into a fast gravity-dive, guiding it only now and then by a brief eager and reckless, his eyes seeking to pierce the clouds that roiled and twisted uneasily over the surface of the planet. Kerry Blane glanced tolerantly at his young companion, felt a nostalgic Kerry Blane nodded. "Yes," he agreed, and his voice changed subtly. Kerry Blane smiled grimly. "I guess I used too broad an interpretation Kerry Blane nodded. "I think it will find us He turned back to the controls, flipped a switch, and the cutting of the nose rocket dropped the ship in an angling glide toward the clouds a few miles below. Gravity was full strength now, and although not as replaced by heavier fingers of cloud. Kerry Blane pressed a firing stud, and nose rockets thrummed in a rising crescendo as the free fall of the cruiser was checked. Heat rose in the cabin from the friction of movement, and the ship seemed to hover in a gray nothingness. Kerry Blane crouched over the control panel, his hands moving deftly, through sheer instinctive ability, seeming to fly it as though he were an integral part of the ship. time the incredible instinct that had made Kerry Blane the idol of a Kerry Blane heard Splinter's instant sigh of unbelief. Kerry Blane nodded. "That was merely a pretext to keep foolhardy Kerry Blane lit a cigarette, leaned toward a vision port. He felt again Kerry Blane chuckled dryly. "Feel like going for a swim?" he asked Kerry Blane chuckled again, swung the cruiser toward the tiny smudge of Thirty minutes later, Kerry Blane circled the island that floated "There's nothing special to see," Kerry Blane said shortly. "As I Kerry Blane shook his head, swung the cruiser north again. "Orders are orders!" Kerry Blane shrugged. He swung the cruiser in a wide arc to the north, trebling the flying speed within minutes, handling the controls with a familiar dexterity. "Cheer up, lad," Kerry Blane said finally. "I think you'll find plenty to occupy your time shortly." Blane's automatic grimace of distaste. Then he yawned hugely, twisted into a comfortable position, dozed sleepily. Kerry Blane rode the controls for the next three hours, searching the limitless ocean for the few specks of islands that followed the slow Kerry Blane spun the ship in a tight circle, sent it flashing to the Kerry Blane grinned, tried to conceal the excitement he felt. He shook "Could be!" Kerry Blane agreed. "Belt yourself," Kerry Blane warned. "If that beach isn't solid, I'll have to lift the ship in a hell of a hurry." "Right!" Splinter's fingers were all thumbs in his excitement. Kerry Blane set the controls for a shallow glide, his fingers moving "We're going in," Kerry Blane said quietly. "Damn!" Kerry Blane swore briefly. Kerry Blane said absolutely nothing, his breath driven from him by the suck of inertia. His hands darted for the controls, seeking to balance the forces that threw the ship about like a toy. He cut all rockets Kerry Blane choked, tried to turn his head from the water that trickled Kerry Blane moved his arm experimentally, felt broken bones grate in Kerry Blane nodded, clambered to his feet, favoring his broken arm. Anger suddenly mottled Kerry Blane's face He swung lithely from the portal, reached down a hand to help the older man. After much puffing and grunting, Kerry Blane managed to clamber through the port. They stood for a moment in silent wonder, "How big do you feel now?" Kerry Blane asked quietly. Kerry Blane walked the length of the cruiser, examining the slight hand to aid Kerry Blane's descent. Kerry Blane came down slowly and Kerry Blane strode forward, puzzlement on his lined face, his hand "The crash must have broken something," Kerry Blane said slowly. "Try the other," Kerry Blane said slowly. Old Kerry Blane dropped the first gun to his side, swore harshly.

<question>:
Why does Kerry Blane leave retirement?

<options>:
A He runs out of money in his pension
B Splinter Wood asks for him to be his mentor
C He misses flying spacecraft too much to quit
D He is called back to fly spacecraft because he is one of the best pilots

<answer>:

C