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

<passage>:
By CARL JACOBI Grannie Annie, who wrote science fiction under the nom de plume of Annabella C. Flowers, had stumbled onto a murderous plot more hair-raising than any she had ever concocted. didn't worry her—I was the guy he was shooting at. I was killing an hour in the billiard room of the in Swamp City when the Venusian bellboy came and tapped me on the Grannie Annie! on her faded green umbrella. A little wisp of a woman clad in a voluminous black dress with one of those doily-like caps on her head, tied by a ribbon under her chin. Her high-topped button shoes were I barged across the lounge and seized her hand. "Grannie Annie! I "Hi, Billy-boy," she greeted calmly. "Will you please tell this one there at this hour." and Grannie Annie her usual whisky sour—I waited until she had tossed the drink off at a gulp before I set off a chain of questions: "What the devil are you doing on Venus? Don't you know women aren't "Hold it, Billy-boy." Laughingly she threw up both hands. "Sure, I knew they are. Anyway, I've been thrown out of better places." She hadn't changed. To her publishers and her readers she might be Annabella C. Flowers, author of a long list of science fiction novels. But to me she was still Grannie Annie, as old-fashioned as last year's hat, as modern as an atomic motor. She had probably written more drivel sat back and massaged their digits, watching their earnings mount. One thing you had to admit about her books. They may have been dime novels, but they weren't synthetic. If Annabella C. Flowers wrote a novel, and the locale was the desert of Mars, she packed her carpet bag and hopped a liner for Craterville. If she cooked up a feud between two ." I grinned. "All complete, I'll bet, with threats against the universe and beautiful Earth heroines dragged in by the hair." "I almost forgot, Billy-boy. I'm due at the Satellite Theater in ten Before I realized it, I was following her through the lounge and out to the jetty front. Grannie Annie hailed a hydrocar. Five minutes later we drew up before the big doors of the Satellite wood seats and dingy atobide lamps. But the place was In front was a big sign. It read: NINE GENIUSES THE QUESTION PROGRAM OF As we strode down the aisle a mangy-looking Venusian began to pound a tinpan piano in the pit. Grannie Annie pushed me into a seat in the front row. "Sit here," she said. "I'm sorry about all this rush, but I'm one of stage steps and disappeared in the wings. yet." The piano struck a chord in G, and the curtain went rattling up. On the stage four Earthmen, two Martians, two Venusians, and one Mercurian sat on an upraised dais. That is to say, eight of them sat. The There was a roar of applause from the Satellite audience. When it had . "One thing more. As usual we have with us a guest star who will match her wits with the experts. May I present that renowned writer of science fiction, Annabella C. Flowers." From the left wing Grannie Annie appeared. She bowed and took her place on the dais. dials and nodded. Blue light flickered on the pantascope panel to voice echoed through the theater: Doctor Universe nodded and turned to Grannie Annie who had raised her And so it went. Questions from Mars, from Earth, from Saturn flowed in the visi sets. Isolated miners on Jupiter, dancers in swank Plutonian bantering side play, the experts gave their answers. When they failed, It grew a little tiresome after a while and I wondered why Grannie had The audience in the Satellite were turned in a smile of satisfaction. crowd. It was outside under the street marquee that a strange incident Moments later an official hydrocar roared up and a dozen I.P. men rushed out and scattered the crowd. But a few stragglers lingered to Grannie Annie came out from behind the box office then. She took my arm was all but deserted. In a booth well toward the rear the old lady surveyed me with sober "Billy-boy, did you see the way that crowd acted?" , hit the stands last January," she began. "When it was finished I had planned to take a six months' "Who?" I interrupted. asked abruptly. electromagnetic pulsations, but they are also a strange combination of Beta followed." Grannie Annie lit a cigarette and flipped the match to the floor. "To go back to my first trip to Venus. As I said, I met Ezra Karn, an If Grannie expected me to show surprise at that, she was disappointed. Grannie nodded. "Yes," she said. "That's exactly what I think." I got my pipe out of my pocket, tamped Martian tobacco into the bowl and laughed heartily. "The same old Flowers," I said. "Tell me, who's your thief ... Doctor Universe?" She regarded me evenly. "What makes you say that?" "The way the theater crowd acted. It all ties in." quiz program. The theater crowd was but a cross-section of what is en masse ." If it had been anyone but Grannie Annie there before me, I would "All right!" appeared. On the booth wall a scant inch above Grannie's head the Grannie Annie leaped to her feet, grasped my arm and raced for the An instant later we were plunging through the dark night. boatmen, and we loaded our supplies into three clumsy It was around the camp fire that night that Grannie took me into her that broadcast would have meant little, a slight rebellion here, an given me, everything dovetailed. The situation on Jupiter was swiftly undulating sweeps toward the center of the camp. Fascinated, I watched From the tent opposite a gaunt figure clad in a familiar dress appeared. Grannie gave a single warning: air. A moment later something huge and heavy scrabbled across the Grannie Annie fired with deliberate speed. I stood frozen as the diminuendo of its wild cries echoed back to me. cafe in Swamp City. Exactly." Grannie Annie halted at the door of her tent and faced me with earnest eyes. "Billy-boy, our every move is At high noon by my Earth watch I sighted a low white structure on one jetty, and Grannie Annie was introducing me to Ezra Karn. varpa cloth, the Venus equivalent of buckskin, and on his Flowers is a friend of mine." He ushered us down the catwalk into his hut. The place was a two room affair, small but comfortable. The latest Grannie Annie came to the point abruptly. When she had explained the "What do you mean?" Grannie paused in the act of rolling herself a "Laugh?" A scowl crossed Grannie's face. Grannie frowned in annoyance, but the prospector was adamant. He were ill-at-ease now and jabbered among themselves constantly. We camped that night on a miserable little island where insects swarmed futility of the venture. Only the pleadings of Grannie Annie kept me arelium Grannie gazed a long moment through binoculars. "Billy-boy, take three Venusians and head across the knoll," she ordered. "Ezra and I will Moments later our two parties converged at the base of the great ship. "Up we go, Billy-boy." Heat gun in readiness, Grannie Annie began to the feeble shafts of daylight that filtered through cracks in the Grannie stamped her foot. "It's maddening," she said. "Here we are at

<question>:
Who was performing at the Satellite Theater when Billy-boy and Grannie Annie arrived?

<options>:
A The Swamp City community members
B Charles Zanner
C Doctor Universe
D Annabellla C. Flowers

<answer>:

C