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

<passage>:
There was no reason why everything shouldn't have been functioning perfectly, of course, but he was pleased to have it confirmed, all the lock, staring out over the dank Venusian terrain at the native town. He The Exec shrugged. "I don't know, Lowry," he said. "This is a funny Lowry lifted his eyebrows. "Oh? But after all, they're human beings, "Acclimation," Lowry said scientifically. "They had to acclimate The Exec shrugged again. He stared at the wooden shacks that were the outskirts of the native city, dimly visible through the ever-present proton-rifles slung over their backs. A few natives were gazing "Of course," Lowry said suddenly, "there's a minority who are afraid They think there will be hordes of immigrants from Earth, now that we know Venus is habitable. And there's some sort of a paltry underground The annunciator over the open lock clanged vigorously, and a metallic voice rasped: "Officer of the Deck! Post Number One! Instruments reports a spy ray focused on the main lock!" Lowry, interrupted in the middle of a word, jerked his head back and stared unbelievingly at the tell-tale next to the annunciator. Sure enough, it was glowing red—might have been glowing for minutes. He snatched at the hand-phone dangling from the wall, shouted into it. "Set up a screen! Notify the delegation! Alert a landing party!" But even while he was giving orders, the warning light flickered suddenly and went out. Stricken, Lowry turned to the Exec. "You see?" others in the room looked apprehensive. "You see?" Svan repeated. "From The younger of the two women sighed. She might have been beautiful, in spite of her dead-white skin, if there had been a scrap of hair on her Earth-ship returns, it means disaster for Venus. Therefore, it must not return." He grinned triumphantly, looking from face to face. The grin faded uncertainly as he saw what was in their eyes—uncertainty, find. It is almost dusk now. He can hide, surely, in the vegetation. a hysterical woman, a few screams, that's all there is to it. And the sixth person will have his chance to steal to the side of the ship. The bomb is magnetic. It will not be noticed in the dark—they will take off before sunrise, because they must travel away from the sun to return—in forty hours the danger is removed." There was comprehension in their eyes, Svan saw ... but still that uncertainty. Impatiently, he crackled: "Look at the slips!" Though he had willed his eyes away from it, his fingers had rebelled. Instinctively they had opened the slip, turned it over and over, striving to detect if it was the fatal one. They had felt nothing.... glance, then looked up to see who had won the lethal game of chance. Each of the others had looked in that same second. And each was looking one to announce it—a second, ten seconds.... Then gray understanding came to him. A traitor! his subconscious whispered. A coward! He stared at them in a new light, saw their coward, it would do no good to unmask him. All were wavering, any might be the one who had drawn the fatal slip. He could insist on inspecting Masked by the table, his hand, still holding the pencil, moved swiftly The six conspirators in Svan's old ground car moved slowly along the for deceptively flimsy-looking pistols at their hips, stood before the He half turned in the broad front seat next to the driver, searching the faces of the others in the car. Which was the coward? he wondered. Ingra? Her aunt? One of the men? The right answer leaped up at him. They all are , he thought. Not one eyes. Silently she nodded, advanced the fuel-handle so that the clumsy dark now. The car's driving light flared yellowishly in front of them, illuminating the narrow road and the pale, distorted vegetation of the again, to halt before morning. But before then they would be done. A proton-bolt lanced across the road in front of them. In the silence The girl, Ingra, gasped something indistinguishable, slammed on the brakes. A Venusian in the trappings of the State Guard advanced on them from the side of the road, proton-rifle held ready to fire again. "Where are you going?" he growled. the door beside him and stepped out, careless of the drizzle. "We heard Confusion furrowed the guard's hairless brows, then was replaced by a sudden flare of understanding—and fear. "The Council!" he roared. faster. His gamble had failed there was only one course remaining. He hurled his gross white bulk at the guard, bowled him over against Ensign Lowry, staring anxiously out through the astro-dome in the bow of the Earth-ship, cursed the blackness. at the computer's table. "Look—are those lights over there?" Lowry, stung, looked to see if the Exec was smiling, but found no something happens to the delegation?" "Then we're in the soup," the Exec said philosophically. "I told you the natives were dangerous. Spy-rays! They've been prohibited for the last three hundred years." "It isn't all the natives," Lowry said. "Look how they've doubled the secret group they call the Council." "And how do you know the guards themselves don't belong to it?" the Exec retorted. "They're all the same to me.... Look, your light's gone out now. Must have been the guard. They're on the wrong side to be coming from the town, anyhow...." lights out and stopped the car. Then he reached in the compartment From the guards , his mind echoed. He smiled. At least, they would feel no pain, never know what happened. With the amount of atomite in "Good luck," repeated the others. Then silently the electric motor of There was an instant of doubt in his steel-shackled mind, then it was driven away. Perhaps she was loyal, yet certainly she was weak. And since he could not know which was the one who had received the marked He advanced along the midnight road to where the ground rose and the jungle plants thinned out. Ahead, on an elevation, were the rain-dimmed lights of the Earth-ship, set down in the center of a clearing made by its own fierce rockets. Svan's mist-trained eyes spotted the circling figures of sentries, and knew that these would be the ship's own. slim-shafted blasters they carried. Only deceit could get him to the turned it over without looking at it, wondering who had drawn the first cross, and been a coward. Ingra? One of the men? was racing along the road. He spun around and was caught in the glare of its blinding driving-light, as it bumped to a slithering stop. He stared unseeingly at the light. "Go away!" he croaked unbelievingly. in the car— "Go away!" he shrieked, and turned to run. His fists clenched and onto the hard, charred earth of the clearing. Only then did he hear the sound of the explosion, and as the immense echoes died away he began to callously to Lowry, who had just come up. "It won't last long, though. Lowry, a bewildered expression on his beardless face, held out the two halves of a metallic sphere. Dangling ends of wires showed where a connection had been broken. "He had a bomb," he said. "A magnetic-type, Lowry was staring at the huddled, mutilated form of Svan. He shuddered. "What's that?" Lowry craned his neck. "A piece of paper with a cross on slowly, displayed the other side. "Now what in the world would he be

<question>:
What were the lights Lowry saw in the dark?

<options>:
A Svan and his conspirators
B The guards
C The delegation
D Another spy-ray

<answer>:

A