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

<passage>:
Curtis recalled that Nelson and Androka had long conversations together—conversations which they would end abruptly when anyone else came within earshot. And Nelson had always been chummy with the worst trouble maker in the crew—Bos'n's Mate Bradford. chair, stretched himself to his full, lanky height and yawned. That would be Nelson, his navigating officer. Nelson always knocked that Curtis didn't hurry. It pleased him to let Nelson wait. He moved slowly entire complement of two hundred and twenty men were present—except Navigating Officer Nelson, and Bos'n's Mate Bradford! And Zukor Androka The wizened face of the older man was molded in intent lines of With the coming of dawn, a little exploration revealed that the was also missing! Nelson, his shaggy blond brows drawn scowlingly down over his pale eyes his thin face a mass of tense lines fumbling at the neck of his slicker. Rain was coursing down his white his taut face, restless, searching eyes, and eternally nervous manner got Curtis' goat. "Come in, Nelson!" he said. Nelson shouldered his way inside, and stood there in his dripping oilskins, blinking his eyes against the yellow light. Curtis closed the door and nodded toward the bent form of Zukor Androka, with a quizzical grin. "Old Czech-and-Double-Czech is working hard on his latest invention to pull Hitler's teeth and re-establish the Czech Republic!" Nelson had no answering smile, although there had been a great deal of good-natured joking aboard the Comerford "I'm worried, sir!" Nelson said. "I'm not sure about my dead reckoning. Curtis threw his arm around Nelson's dripping shoulders. "Forget it! "But this storm, sir!" Nelson avoided Curtis' friendly eyes and slipped out from under his arm. "It's got me worried. Quartering wind of "As if by providence, sir, there's a clear patch. I'm wondering—" His voice trailed off, but his eyes swung toward the gleaming sextant on minutes he returned and handed Nelson a sheet of paper with figures "Bet you're not off appreciably." Nelson stared at the computations with shaking head. Then he mutely held up his own. that far off old Figure-'em Nelson's estimate, I'm checking back," he Nelson complied, and the throbbing drive of the engines lessened at once. Nelson said: "I've been wondering, sir, if it wouldn't be advisable to try getting a radio cross-bearing. With all these rocks and islets—" "Radio?" repeated the little Czech, thrusting his face between the other two, in his independent fashion that ignored ship's discipline. "You're using your radio?" He broke into a knowing chuckle, his keen "Bearing, sir?" The man brought his eyes down with difficulty, as if high-powered commercial program in the higher reach, nor the chatter of As if to mock him, the ship's radio began to answer: winking at the two officers over Androka's discomfiture, and asked for Curtis sighed with relief. He saw that Nelson was staring fiercely "I'm relieved, sir, just the same," Nelson admitted, "to have the radio tingle they sent through his inquiring fingers. pausing every now and then to run his bony fingers through his tangled mop of gray hair, or to claw nervously at his beard. hopelessly." "Seems to me," Curtis said dryly, "this invention can harm your friends The scientist drew himself up to his full height—which was only a in the man's expression, as his lips drew back from his yellowed teeth. A far-away look came into Androka's eyes. He did not seem to hear the question. He lowered his voice: "My daughter is still in Prague. So are my sister and her husband, and their on his slicker as he went. The shout from the watch forward had been He was beside Navigating Officer Nelson on the bridge, and saw the helmsman climbing the rapidly spinning wheel like a monkey as he put it Curtis felt Nelson's hand grip his shoulder, as he put his lips close was shrouded in a huge pall of yellowish-gray mist, and were becoming thicker. Nelson was nowhere in sight. The steersman lay in a limp heap beside the swinging wheel. Then a gas-masked figure appeared through the was completely walled in by the yellowish-gray mist. He felt his senses that ebbed and flowed in a tide of excited talk. He caught a word of began to throb, as if someone were pounding on them from the inside. He a cloud seemed to be mounting within him until The rain had abated to a foggy drizzle. The wash of the surf swung the From her bridge, Navigating Officer Nelson watched the gas-masked from an ancient fairy tale or a modern horror story. Nelson looked like a goblin himself, with his face covered by a respirator. At his side, stood his fellow conspirator Bos'n's Mate Joe Bradford, also wearing a gas mask. Nelson spoke in a low tone, his lips close to Bradford's ear. "It Nelson swore under his breath. "Reckon it'll take a couple of hours "I'd rather get along without Androka, if we could!" Nelson muttered. "He's nothing but a crackpot!" Nelson grunted and turned away. A short, thick-set figure in the uniform of a German naval commander had ascended the accommodation ladder and was mounting to the bridge. He, too, was equipped with a respirator. He came up to Nelson, saluted, and held out his hand, introducing himself as Herr Kommander Brandt. He began to speak in German, but Nelson stopped him. "I don't speak any German," he explained. "I was born and educated in the United States—of German parents, who had been ruined in the First "Maybe Curtis'll find out his suspicions were justified," Nelson said strange figure of Professor Zukor Androka! "The professor's in his glory!" Nelson remarked to Kommander Brandt. "The Carethusia ?" Nelson asked, in a puzzled tone. "What's the idea?" Brazil—through the blockade," Nelson said, "without taking the risk of "Can we trust Androka?" Nelson asked, with a sudden note of suspicion in his voice. "Yes," Brandt assured him. "Of all men—we can trust Androka!" "But he's a Czech," Nelson argued. "The gestapo takes care of Czechs and Poles and Frenchmen and other foreigners whom it chooses as its agents," Brandt pointed out. "Androka has a daughter and other relations in Prague. He knows that if anything misfires, if there is the slightest suspicion of treachery on his part, Nelson turned to watch the forward fighting top of the Descending a companionway to see what was going on below, Nelson found Returning to the bridge, he found that the tide in the inlet had risen sand bar. This was accomplished without difficulty. Brandt came over to where Nelson was standing on the bridge and held out his hand. "Congratulations, Herr Kommander Nelson!" he said. "Ve have stolen one " Prosit! " Nelson repeated, and the two grinned at each other. found himself lying in wet sand, on a beach, somewhere, with the as if a wave of searing heat had scorched them. All around him in the nearly total darkness, he could make out the dim exploring. He heard the murmur of voices and saw the glow of lighted A man with a flashlight was approaching him. Its white glare shone for which smelled strongly of treachery and sabotage. Navigating Officer Nelson's queer conduct. They were all part of a carefully laid plan! All the suspicious circumstances surrounding Nelson came flooding into Curtis' mind. He had never liked the man never trusted him. Nelson

<question>:
What is implied when the narrator describes Nelson’s light colored hair?

<options>:
A Nelson is German by ancestry, raised sympathetic to Germany’s cause.
B Nelson is German by ancestry, but was raised on the side of the American effort.
C Curtis is prejudiced against people with light hair.
D Nelson is Czech

<answer>:

A