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

<passage>:
Those methane and ammonia planets, take it from me, they're the and talent and the day the Solar System Customs caught me red-handed smuggling Kooleen crystals in from Mars, I knew I was in that corner, and sewed up tight. Sure, the crystals are deadly, but I was smuggling them legitimately, in a manner of speaking, for this doctor to experiment with. He wasn't going to sell them for dope. But—and this was the 'but' that was didn't foul me with this trip to good old Jupiter. Then I croaked, "Jupiter! What for? Are you running outa space in stir? he said. "Every spaceman has, I am sure. Insect-like creatures who manifestly migrated there from some other system and who inhabit anti-gravity field in the gaseous portion of the atmosphere—" and in some way worm from them the secret of their anti-gravity field, gangrene around the edges. The bleat of anguish that accompanied my first view of those beauties now to think of it. The way that bunch of stuffed shirts in the S.S.C. "Oh, a pretty good jolt if they can keep hold of me," he says. "I just made a pass at the Killicut Emeralds, that's all, and got nabbed." "Oh, no!" I moaned. "What were you trying to do, start a feud between us and Mars?" "I'd start more than that just to get me mitts on them stones again! Why, you ain't never seen jools till you've seen them! Big as hen's eggs, an even dozen of 'em and flawless, I'm a-shoutin', not a flaw!" His eyes watered at the memory, yearning like a hound-dog's over a fresh scent. I couldn't believe it. Those emeralds were in the inner shrine of the super-sacred, super-secret temple of the cavern-dwelling tribe of Killicuts on Mars—the real aborigines. Bleachies, we call them, sort "How'd you make the getaway?" I asked, taking him at his word. where I cached 'em." "Cached what?" "The rocks, stupe." I hardly heard the cut. "You mean you really did get away with them?" My jaw must've been hanging down a foot, because I'd just been playing along with him, not really believing him, and now all of a sudden I somehow knew that he'd really lifted those emeralds. But how? It was coming. That night I turned on my hard prison cot until my bones were so much 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, you know. Mars! What a place fer jools! Damn desert's lousy with 'em, about the rocks on Mars but I jerked him back. fer them. Besides, the space suit rig you got to wear, they can't bite so I brought her a hundred pounds of the stuff, an' she went fer that almost like it was diamonds, too. Did I rate around there fer awhile!" He sighed regretfully. "But then I went and made her mad, an' I'm kinda persona non grata there right now. By the time I gnaw outa this here 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 already penetrated the Great Red Spot of old Jupiter and come out 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' slipped down onto the Red Desert of Mars and picked up the Killicut Emeralds from where Pard Hoskins had cached them and safe out in space to remind me that this was public service, strictly. "These—" he had proclaimed with a disdainful flourish, like a placer miner pointing to a batch of fool's gold—"These jewels are as nothing, Ritter, compared with the value of the secret you are to buy with Jupiter's farthest moon patted my pretty enameled suit, which was a study in paris green and passionate purple. I patted the three hundred pounds of arsenic crystals for Akroida and anyone else I might have to bribe. I anxiously examined my suit's air and water containers and the heating unit that would keep them in spacemen, and headed in. The big ship was long gone, and I felt like a there had been fringes of snow-white frozen ammonia, but now it was all dyed redder than Mars. Then I took the plunge right into it. Surprise! But my green boat must have showed up like a lighthouse in all that red, because it wasn't long until I spotted a purple and green that I was further in. I'm no chemist, and I couldn't have gotten out Meanwhile the hopper-scorp reached the ship. Hastily I squirted some of my Scorpion-Come-Hither lure on the chest of my spacesuit, opened the those things they called monocles. Pard hadn't warned me about those removable eyes, for reasons best known to himself. I still wake up screaming.... I thrust this sneak-thief idea back into limbo. nuts. Then I got a glimmer through my paralyzed gray matter. "Who named you that?" the usual plastic bubble. And it was rigged out with phony antennae and mandibles and other embellishments calculated to interest my hosts. Whether it interested them or not, it was plenty uncomfortable for me. beginning to be patterned with dozens of green-and-purple scorpions, all busy filling huge baskets with buds and tendrils, no doubt. Other scorpions oared and floated about in twos and threes in a free something began to loom out of the mist, and I forgot the playboys and persecutor was right, too. That anti-grav secret was worth more than airlock. III That palace was like nothing on earth. Naturally, you'll say, it's on Jupiter. But I mean it was even queerer than that. It was like no building on any planet at all. And, in fact, it wasn't on a planet there wasn't gravity. There was plenty of gravity to suit me—just Attaboy, however, had the answers for everything. Towing me from the airlock to the window ledge, he again sniffed that delectable odor on block, skyscrapers and all. It was like a mammoth red cavern, and it glowed like the inside of a red light. No wonder those scorpions like green and purple. What a relief from all that red! A patch in the middle of the hall became a floating platform holding up a divan twenty feet square covered with stuff as green as new spring green edge anywhere. She was even more purple than my fancy enameled space suit, and she was big enough to comfortably fill most of that Under the vicious sag of her Roman nose, her mandibles kept grinding, shaking the jewels that were hung all over her repulsive carcass, and making the Halcyon Diamond on her chest blaze like a bonfire. those hopper-scorps. I didn't need their particular brand of Morse Code "Dear lady, it is from an interspace trader who possesses some truly remarkable jewels," he confessed coyly. Akroida toyed with the Halcyon Diamond and ignored the bait. "His name?" she demanded. And when he told her, with a bad stutter in stones were so amazing, Royal Akroida, that I didn't pay much attention to the—uh—trader. He does seem to resemble an—ah—earthman." He ducked his head and fearfully waited.

<question>:
What hadn't been smuggled out of Mars?

<options>:
A emeralds
B diamonds
C rubies
D crystals

<answer>:

C