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

<passage>:
"Never mind that," Kelly said, escorting Dan along the corridor. He operated. He finished his sandwich, went to the shelves and pulled down one of the brown-paper bundles. Loosening the string binding the package, he Dan liked it. Still, it hardly So far, so good, he reflected, stretching out. When they showed up, he'd have to handle everything just right. If he scared them off his discovery might mean to him. But he was ready. Let them come. Eight hours, three sandwiches and six beers later, Dan roused suddenly from a light doze and sat up on the cot. Between him and the crowded Dan was aware of his heart thumping painfully under his ribs. His mouth was dry. This was the moment he'd been planning for, but now that it was here— Dan, sitting rigid on the cot. The thin man placed a lantern on the table, twiddled a knob. A warm light sprang up. The visitors looked at the stacked shelves. "I've—ah—been expecting you gentlemen," Dan said. "I—" "I told you we couldn't trust no guy with nine fingers on each hand," the cage beside Fiorello. "We'll send for you," Dan said. "Let's go, Fiorello." The balding man snatched suddenly for the gun. Dan wrestled with him. The pistol fell, bounced on the floor of the cage, skidded into the cop pushed past them, spotted Dan, moved in briskly for the pinch. Dan grabbed a lever at random and pulled. swallowed hard and nudged a second lever. The cage sank like an elevator into the floor, vivid blue washing up its sides. Hastily he reversed the control. Operating a time machine was tricky business. One little slip, and the Slane molecules would be squeezing hard. He'd take it slowly, figure out the controls.... Dan took a deep breath and tried another lever. The cage rose gently, in eerie silence. It reached the ceiling and kept going. Dan gritted his teeth as an eight-inch band of luminescence passed down the cage. Then he was emerging into a spacious kitchen. A blue-haloed cook waddled to a luminous refrigerator, caught sight of Dan rising slowly from the floor, stumbled back, mouth open. The cage rose, penetrated a second ceiling. Dan looked around at a carpeted hall. Cautiously he neutralized the control lever. The cage came to rest an inch above the floor. As far as Dan could tell, he hadn't traveled so much as a minute into the past or future. something thrown together hastily from common materials. Still, it worked. So far he had only found the controls for maneuvering in the usual three dimensions, but the time switch was bound to be here somewhere.... another second she would see him, and give the alarm—and Dan needed a few moments of peace and quiet in which to figure out the controls. He moved a lever. The cage drifted smoothly sideways, sliced through the wall with a flurry of vivid blue light. Dan pushed the lever and began briskly unbuttoning her shirt. Dan tried moving a lever. The cage edged toward the girl. Another he rose gently. The girl tossed the shirt onto a chair and undid the Dan blinked at the flash of blue and looked down. He was hovering twenty feet above a clipped lawn. He looked at the levers. Wasn't it the first one in line that moved the seemed to suddenly become aware of eyes on her, whirled— With a sudden lurch that threw Dan against the steel bars, the cage shot through the wall into the open air and hurtled off with an acceleration that kept him pinned, helpless. He groped for the click! and the glow faded. With a lunge, Dan scrambled out of the cage. He stood looking around at a simple brown-painted office, dimly lit by sunlight filtered through happen to be aboard the carrier, by the way?" "I just wanted—I mean, after I figured out—that is, the police ... I "That reminds me," Dan said. "I have to be running along now." He "That? That's merely a carrier. Now tell me more about your time following Dan's glance. One of the eighteen fingers touched a six-inch yellow cylinder lying on the desk. "Until the carrier is fueled, I'm afraid it's quite useless. But, to put you in the picture, I'd best should say. What about it, Dan?" "Both," Dan said. "I'll just nip over and—" cells. "Now, off to gather in the time machine." He took his place in the carrier, patted the seat beside him with a wide hand. "Come, Dan. Get a wiggle on." Hesitantly, Dan moved to the carrier. The bluff was all right up to a point—but the point had just about been reached. He took his seat. Blote moved a lever. The familiar blue glow sprang up. "Kindly direct smoothly toward the flat roof Dan indicated. "Better let me take over now," Dan suggested. "I want to be sure to get us to the right place." "Very well, Dan." Dan dropped the carrier through the roof, passed down through a dimly seen office. Blote twiddled a small knob. The scene around the cage grew even fainter. "Best we remain unnoticed," he explained. The cage descended steadily. Dan peered out, searching for identifying employ a bar-type construction, not unlike our carriers." the machine veered left, flickered through a barred door, came to a halt. Two nebulous figures loomed beside the cage. Dan cut the switch. If he'd guessed "Grab him!" someone yelled. Blote recoiled, threshing his ambulatory members in a fruitless attempt to regain the carrier as Manny and Fiorello closed in. Dan hauled at a lever. He caught a last glimpse of three struggling, blue-lit figures Dan slumped back against the seat with a sigh. Now that he was in the clear, he would have to decide on his next move—fast. There was no the carrier, then— A low growling was coming from somewhere, rising in pitch and volume. Dan sat up, alarmed. This was no time for a malfunction. The sound rose higher, into a penetrating wail. There was no sign of mechanical trouble. The carrier glided on, swooping now over a nebulous landscape of trees and houses. Dan covered his ears against the deafening shriek, like all the police sirens in town blaring at once. If the carrier stopped it would be a long fall from here. Dan worked the controls, dropping toward the distant earth. The noise seemed to lessen, descending the scale. Dan slowed, brought the carrier in to the corner of a wide park. He dropped the last few inches and cut the switch. As the glow died, the siren faded into silence. Dan stepped from the carrier and looked around. Whatever the noise was, it hadn't attracted any attention from the scattered pedestrians in the park. Perhaps it was some sort of burglar alarm. But if so, why hadn't it gone into action earlier? Dan took a deep breath. Sound or no sound, he would have to get back into the carrier and transfer it to a secluded spot where he could study it at leisure. He stepped back in, reached for the controls— which hung suspended near the carrier. Its surface rippled, faded tight-fitting white uniform stepped through. Dan gaped at the small rounded head, the dark-skinned long-nosed face, the long, muscular arms, the hands, their backs tufted with curly

<question>:
What choice best describes Dan's feelings toward operating the carrier throughout the article?

<options>:
A He was originally confused on how to operate the carrier and still remained unfamiliar with how it worked throughout the article.
B Dan was intrigued by the carrier when he first operated it but gradually began to dislike it the more he used the carrier.
C Dan was originally confused by the machine but became increasingly frustrated with it throughout the rest of the article.
D Dan was nervous to operate the carrier when he first used it, but eventually became confident in controlling it.

<answer>:

A