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

<passage>:
O'Rielly had slammed the safety helmet on his head he was already throwing open the lock to the burner room. The hot, throbbing rumble throbbing rumble changed tone. Old Callahan's voice crackled now through the helmet's ear contact. room. Anyone entered or left there, a bell clanged, lights flashed and a meter registered beside the Burnerman's bunk and on the Burner room. Nobody had passed through. O'Rielly knew it. Callahan knew it. By now the Old Woman herself, Captain Millicent Hatwoody, had probably his brain was suddenly taken apart and slapped together again. Felt that way. She was sitting on his bunk. No three-tailed mouse. No Old Woman either. Oh, she was a female human, though, this creature at which O'Rielly stood gaping. Yes, ma'am! "I was in your burner room." Her voice matched the rest of her, a blend of loveliness unlike anything outside a guy's most secret dreams. "I couldn't stand the heat any longer and I couldn't open that big door. "They ought to cool the air in there with perfume! I'll drop a suggestion in the Old Woman's box first chance I get." "You're so thoughtful. And do you have bathing facilities?" "That door right there. Oh, let me open it for you!" when he'd been roped into a dice game with a bunch of Venus lads who had a jug to cheer one's parting with one's money. A bell suddenly clanged fit to wake the dead while the overhead lights Oh, very quite! "You rockhead!" Only Callahan back from the burner. "Didn't I tell you to shower the stink off yourself? Old Woman's taking a Venus bigwig on tour the ship. Old Woman catches you like you been rassling skunks she'll peel both our hides off. Not to mention what she'll do anyway "Hah? What?" Callahan blinked like waking from a trance even groaned to himself, something that sounded like, "Blabbering like I'd had a nip myself—or one of them dillies was radiating nearby." Then was saved! And O'Rielly would now think of grand ways to save her O'Rielly's shower door, however, opened abruptly. O'Rielly had not opened it. O'Rielly, however, suffered a cruel stab of dismay. Surely his dear stowaway had been listening through the door. Why didn't she At sight of her, of course, Callahan's eyes near popped from his old head. "Berta!" "Oh, I'm Trillium," she assured Callahan sweetly. "But Grandmamma's was being slapped together again. "O'Rielly! Awp, you angel-faced pirate, couldn't you hide her somewheres better than that? Shut up, you don't have to explain to me, but God help the whole universe if we don't flimflam the Old Woman!" With which ominous remark, rendered in a zesty devil-may-care manner, however, Callahan threw himself into O'Rielly's shower. Trillium. Just like that, O'Rielly felt as sparkling of mind as a spiral nebula. "My locker!" he crowed with inspiration and yanked open the doors under his bunk. He glimpsed a black ditty bag, also the cap and coverall uniform of a baggage boy. "I threw them in there before you came on duty before blast-off," Trillium explained. "I knew the burner room would be warm." Trillium—with her shape—passing as a boy hustling bags through this ship. O'Rielly chortled as he tucked her under his bunk. "Now don't you worry about another thing!" "Oh, I'm not," she assured him happily. "Everything is going just the way Grandmamma knew it would!" O'Rielly's shower opened and Callahan, glowing like a young bucko, bounced onto the bunk. "Well, did you hide her good this time? No, don't tell me! I want to be surprised if the Old Woman ever finds her." "If what old woman finds whom?" a voice like thin ice crackling wanted to know. The watch room's door had opened. Wouldn't think the Old Woman was a day over seventy-five, let alone near two hundred. Cut of her uniform probably lent a helping hand or three to the young snap of her figure. Frosty blue of fancy hair-do, she was, though, and icy of eye as she looked at O'Rielly and Callahan still lolling on the bunk. Her voice was an iceberg exploding. "At attention!" Never in his right mind would any crewman dare fail to come stiffly erect the instant the Old Woman appeared. Behind her stood a colorfully Wasn't too bad a fib. The more O'Rielly thought of Trillium, the more courtly bow. "Stay at attention!" Old Woman sniffed the air near Callahan's face, door, flipped a switch and tingled as he was electronically cleansed of person and clothes. By time he finished, the Old Woman and His Excellency were already coming out of the burner room, dripping with sweat. Old Woman opened the shower with her customary commanding air. "You first, Your Excellency." "My dear Captain," His Excellency replied like a smoothly drawn dagger, Seeming to grind her teeth, the Old O Woman turned abruptly to leave O'Rielly's watch room. Was all O'Rielly could do to keep from busting out laughing for joy. Old Woman had been flimflammed for fair! Dear Trillium was saved! And betwixt O'Rielly's grand brain and Callahan's great experience she'd be happy forever. A fine loud "thump," however, was now heard. Old Woman whirled back and yanked open the doors under O'Rielly's bunk. "Of all the sappy hiding places!" Callahan yelped, in surprise of course. "Trillium?" His Excellency bellowed as if stung by one of the "Trillium," O'Rielly pleaded in loving anguish, "why do you have to drowned himself if he could. "There are rewards," the Old Woman said with the deadly coldness of looked: ready to wrap his arms around Trillium's brave loveliness and protect it to his last breath of life. Old Woman led the way to her office. Jabbed some buttons on her desk. Panels on opposite walls lit up. efforts." Old Woman sighed through her teeth. "Venus woman aboard this ship. Stowaway. Rattle that around your belfries." The flunkies' faces went slack with shock, then were replaced by a Excellency, "what's this nonsense?" "Some loud creature is interfering," Madame President snapped with annoyance. "Blasted fools still have the circuits crossed," Mr. President swore. "Some silly female cackling now!" as he roared, "You couldn't have stolen away by yourself! Trillium, "Obviously Trillium's poor little brain has been drugged," His Excellency Dimdooly declared. "Grandmamma Berta wouldn't know the first thing about such things!" "Take him away, girls," Berta ordered coolly, whereupon her spouse was yanked from view. His bellows, however, could be heard yet. "Unhand me, you fool did Trillium's Grandmamma let him go?" O'Rielly still had memories of the way he had felt about Trillium

<question>:
What caused Trillium to be found in her hiding place the final time?

<options>:
A The Earthmen couldn't stop staring at the bunk where she was because of their lust.
B His Excellency saw her hiding under the bunk and recognized her immediately.
C O'Rielly and Callahan had turned her in to the Old Woman in hopes of a reward.
D A loud thump from under the bunk that caught the attention of the Old Woman.

<answer>:

D