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

<passage>:
Brian Hanson wondered dispassionately for a moment how his assistants could fail to be as absorbed as he was by the work they were doing, then he let it go as he stepped outside the research building. water running into his bath. Perfect timing. He was making that walk in precisely seven minutes, four and four-fifths seconds. He undressed awake. It was the door that was being attacked, not his head. The battering thunder continued persistently. He swore and sat up. "What do you want?" "All right! All right! I'm coming!" He yelled, crawled out of the tub and reached for his bathrobe. It wasn't there. He swore some more and grabbed a towel, wrapping it inadequately around him it didn't quite meet astern. He paddled wetly across the floor sounding like a flock of ducks on parade. Retaining the towel with one hand he inched the door cautiously open. "What the devil—" He stopped abruptly at the sight of a policeman's uniform. The policeman's face hardened, then relaxed knowingly. "Oh, I see, sir. No rebels, of course. Sorry to have disturbed you. Have a good—Good night, sir," he saluted and left. Brian closed the door in puzzlement. What the devil had that flat-foot been smirking about? Well, maybe he could get his bath now. Hanson turned away from the door and froze in amazement. Through the open door of his bedroom he could see his bed neatly turned down as it should be, but the outline under the counterpane and the luxuriant mass of platinum-blond hair on the pillow was certainly no part of his regular routine. policeman had meant with his insinuating smirk. towel. You should either abandon it or get one that goes all the way round." Brian slowly acquired a complexion suitable for painting fire plugs. "Shut up and throw me my dressing gown." He gritted. The girl swung her legs out of bed and Brian blinked she was fully dressed. The snug, zippered overall suit she wore did nothing to conceal the fact that she was a female. He wrapped his bathrobe austerely around him. "Well, now what?" she asked and looked at him questioningly. struggling heroically to refrain from laughing and that didn't help his dignity any. He strode into the bathroom, slammed the door and climbed back into the bath. The door opened a little. "Get out of here!" he yelled and the door shut abruptly on a rippling embrace of the bath and deliberately set his mind loose to wander in complete relaxation. A hammering thunder burst on the outer door. He sat up with a groan. "Lay off, you crazy apes!" he yelled furiously, but the pounding continued steadily. He struggled out of the bath, wrapped his damp bathrobe clammily around him and marched to the door with a seething fury of righteous anger burning within him. He flung the door wide, his pass the word along." "Come here, you idiot!" Brian screamed after his erstwhile assistant. "Pipe down there, bud," a guard's voice cut in chillingly. Brian retired to his cell bunk and clutched his aching head in frustrated fury. For the nineteenth time Brian Hanson strode to the door of his cell and rattled the bars. "Shut up. Nobody ain't takin' no message to McHague. I don't care if you are—" Brian's eyes almost popped out as he saw a gloved hand reach around the guard's neck and jam a rag over his nose and mouth. Swift shadows moved expertly before his astonished gaze. Another guard was caught and his cell door, a hooded figure which seemed, somehow, familiar. find us trying to get you out of here." Brian felt as though something had kicked him in the stomach. She was right! He had to get out now. He wouldn't be able to explain this away. "Give me that key," he hissed and grabbed for it. few seconds the door swung open and they were fleeing silently down the They burst around a corner onto a startled guard. "They're just ahead of us," Brian yelled. "Come on!" "Right with you," the guard snapped and ran a few steps with them before a blackjack caught up with him and he folded into a corner. Brian's hands opened the complicated lock in a matter of seconds. They were outside the jail on a side street, the door closed and the lock jammed immovably behind them. Sirens wailed. The alarm was out! The street suddenly burst into brilliance as the floodlights snapped on. Brian faltered to a stop and Crystal James pushed past him. "We've got reinforcements down here," she said, then skidded to a halt. Two guards barred the street ahead of them. Brian felt as though his stomach had fallen down around his ankles and was tying his feet up. He couldn't move. The door was jammed shut behind them, they'd have to surrender and there'd be no explaining Brian was startled at the icy hardness of her voice. Two of the rebels pulled a screening tarpaulin aside and revealed crumbling, fallen in in some places and signs of new work where the rebels had cleared away the debris of years. Brian struggled into a zippered overall suit as they followed a twisting, tortuous course for half an hour, switching from one tunnel to another repeatedly until he had lost all conception of direction. The sides of the gap rushed in on the tips of the stubby wings. Brian braced himself for the crash, but it didn't come. At the last possible second, the ship rolled smoothly over. At the moment it flashed through almost as soon as we can walk." "Oh—I see," Brian said weakly and a few moments later he really did astern. "I guess that was a mistake!" Crystal yelled as she fought the controls. Brian almost got to his feet when another wild maneuver hurled him back "That's them," Crystal said with satisfaction. "How are the others doing?" "Look! They're hit!" Brian felt sick. The slower rebel freight ship staggered drunkenly as a torpedo caught She held the ship in its glide, aiming directly for the tangled foliage of the mountain face. Brian yelped and cowered instinctively back. The lush green of the mountainside swirled up to meet them. They ripped "Wait, you fool. They may not even have seen us." But he was gone, running toward a group of ships lined up at the end of the cavern. "Who was that crazy coot and what is this place?" Brian demanded. "Let's get away! I can smell them burning," she shuddered and covered her face with her hands. Brian grabbed her and shook her. "Snap out of it," he barked. "That's no worse than shooting helpless men in parachutes. We can't go, yet entrance." Brian clambered out of the ship and glanced at the glowing points in the rock where the police were cutting their way through outside the line of the exhaust flames. The pulsating thunder in the cavern crescendoed to an intolerable pitch. A huge mass of stalactites crashed to the floor. "It's time to check out," Brian shouted. "Run!" Brian shoved her and they plunged madly through the thick tangle of jungle away from the slide. Huge boulders leaped and smashed through the matted bush around them. Crystal went down as the ground slipped from under her. Brian grabbed Brian and Crystal struggled painfully to solid ground. Crystal gazed with a feeling of awe at the devastated mountainside. "How did you do it?" scrambling through the jungle up the mountainside. "Where are we heading for?" Brian grunted as he struggled along.

<question>:
Why did the first policeman smirk at Brian’s door?

<options>:
A He recognized Brian as the boss of Venus Consolidated Research Organization.
B He saw a woman in the bedroom.
C He was sorry for getting Brian out of the bathtub.
D He saw that Brian’s towel was open and not covering his body.

<answer>:

B