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

<passage>:
JUPITER'S JOKE By A. L. HALEY Casey Ritter, the guy who never turned down a dare, breathed a prayer to the gods of idiots and spacemen, and headed in toward the great red spot of terrible Jupiter. to rat on him before taking the job. Well, Casey Ritter may be a lot of things we won't mention, but he doesn't rat on his clients. So there I was, closeted with the ten fall and the head man intone the sentence that would take me out of circulation for a long, long time. And instead, blast me, if they didn't foul me with this trip to good old Jupiter. I didn't get it at first. I'd argued with 'em, but inside I'd been all set for the sentence, and even sort of reconciled to it. I could even hear the words in my mind. But they didn't match what the judge was saying. I stood there gaping like a beached fish while I sorted it out. Then I croaked, "Jupiter! What for? Are you running outa space in stir? Want to choke me to death in chlorine instead?" Being civil to the court didn't seem important just then. Jupiter was worse than the pen, a lot worse. Jupiter was a death sentence. The senior judge rapped sharply with his gavel. He frowned me down and then nodded at the judge on his right. This bird, a little old hank of dried-up straw, joined his fingertips carefully, cleared his scrawny throat, and told me what for. "You've no doubt heard tales of the strange population of Jupiter," he said. "Every spaceman has, I am sure. Insect-like creatures who the Red Spot of the planet, floating in some kind of artificial At the thought my larynx froze up tight. This was worse than I'd thought. Government men trapping me and then beaming at me. And a full pardon. And a reward. Oh, no! I told myself, it wasn't possible. Not He shrugged, trying for nonchalance. "About the size of a man, I believe." I raised my shrinking head. "Take me to jail!" I said firmly, and collapsed onto my chair. A crafty-eyed buzzard across the table leaned toward me. "So this is the great Casey Ritter, daredevil of the Solar System!" he sneered. "Never loses a bet, never turns down a dare!" I shuddered. "You're telling that one! And besides, a man's got to draw the line somewhere. And I'm drawing it right here. Take me to jail!" won't reach in and nip off an arm or leg while he's got his back turned. How stupid could they get? "Oh, no!" I moaned. "What were you trying to do, start a feud between us and Mars?" His eyes watered at the memory, yearning like a hound-dog's over a and sell 'em to Akroida. She's nuts about jools. What that old girl won't give me fer 'em—" He whistled appreciatively, thinking about it. "Jupiter!" I goggled at him. "Akroida! Who's she?" He looked at me as if I hadn't yet got out from under the rock where he was sure I'd been born. "Don't you know nothin', butterhead?" again. The memory still makes me fry. "Akroida," he explained in his own sweet time, "is the queen-scorp of them idiotic scorpions that lives on Jupiter. I sold her the Halcyon Diamond that disappeared from the World Museum five years ago, remember?" He winked broadly. "It come from Mars in the first place, cheese trap, though, I figger she'll be all cooled off and ready fer them emeralds." I went back to my cot that night, and this time instead of biting my nails, I bit myself. So I faced it. Casey Ritter lost his nerve, and along with it, the chance of a lifetime. A better man than me had already penetrated the Great Red Spot of old Jupiter and come out alive. That thought ate me to the quick, and I began to wonder if it was too late, after all. I could hardly wait for morning to come, so letter to the S.S.C. The Big Sneer of the conference table promptly dropped in on me, friendly as a bottle of strychnine. But for a lad headed for Jupiter that was good training, so I sneered right back at him, explained the caper, and we both paid a visit to Pard. In two days the deal was made cleaned outa me room: a poiple bottle with a bright green stopper." He ruminated a few minutes. "Tell you what, chump. Make them shell out with a green an' poiple spacesuit—them's the real Jupiter colors—an' put just a touch o' that there perfume on the outside of it. Akroida'll do anything fer you if she just gets a whiff. Just anything! But slipped down onto the Red Desert of Mars and picked up the Killicut He paused, his long nose twitching cynically—"IF you succeed, your to which, IF you succeed, you will be a free man." That twitch of the nose riled me no little. "I ain't failed yet!" I snarled at him. "Just you wait till I do, feller!" I slipped the string of emeralds back into its little safe. "Instead of sniping at me, why don't you get that brain busy and set our rendezvous?" Jupiter's farthest moon then they took me in to the edge of Jupiter's ice-cloud and turned me loose in a peanut of a space boat with old Jupe looming ahead bigger than all outdoors and the Red Spot dead ahead. I their proper state. I had already gone over the space boat. Yeah, I was as nervous as a cat with new kittens. Feeling again for my little my Scorpion-Come-Hither lure on the chest of my spacesuit, opened the lock, and popped out, brave as could be. Face to face with that thing, though, I nearly lost my grip on the handle. In fact, I'd have fainted He lolled his hideous cranium practically on my shoulder. "Anything! Just anything you desire, my dearest friend." I tried to back off from him a bit, but the ship stopped me. "I'm Casey him. To my surprise a vapor shot out of a box that I had taken for a natural lump on his back, and he darted away from me. I opened the as solid as if on a floor. Which was fine for flying hopper-scorps, but what about Casey Ritter, who hadn't cultivated even a feather? Attaboy, however, had the answers for everything. Towing me from the ducked his head and fearfully waited.

<question>:
Why does Casey feels regret about choosing prison over the court’s option to be sent into Jupiter’s Great Red Spot to study its inhabitants?

<options>:
A Terrified that being sent to Jupiter will kill him, Casey opts for a jail sell. When he’s told that Jupiter is filled with insect-like beings who share his enthusiasm for a reckless lifestyle, and that the mission could actually make him rich, Casey fears that he’s lost his dare devil edge.
B Terrified that being sent to Jupiter will take too much energy on his part, Casey opts for a jail sell instead. When he’s told that Jupiter is filled with friendly life forms who love emerald and crystal as much as he does, and that the mission could actually prove his innocence, Casey fears that he’s lost his dare devil edge.
C Casey is terrorized by his fellow prisoner, Pard Hoskins, which makes him regret not taking the chance to fly head first into Jupiter’s Great Red Spot. A true dare devil would have taken the challenge, after all.
D Terrified that being sent to Jupiter will kill him, Casey opts for a jail sell. When he’s told that Jupiter is not as dangerous as once thought, and that the mission could actually make him rich, Casey fears that he’s lost his daredevil edge.

<answer>:

D