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

<passage>:
MANNERS AND CUSTOMS OF THE THRID BY MURRAY LEINSTER The Thrid were the wisest creatures in space—they even said so themselves! right away. Most humans couldn't take the sort of thing that went on on Thriddar. Most of them wanted to use missile weapons—which the Thrid did not use—to change the local social system. Most humans got off Thriddar—fast! And boiling mad. Jorgenson had stood it longer than most because in spite of their convictions he liked the Thrid. Their minds did do outside loops, and come up with intolerable convictions. But they were intelligent enough. They had steam-power and even steam-driven atmosphere fliers, but they didn't have missile weapons and they did have a social system that humans simply couldn't accept—even though it applied only to Thrid. The ordinary Thrid, with whom Jorgenson did business, weren't bad all the Thrid—and when Jorgenson finished his breakfast a high Thrid Jorgenson went out, scowling, and exchanged the customary ceremonial from his voluminous garments. Jorgenson saw the glint of gold and was suspicious at once. The words of a current Grand Panjandrum were always written in gold. If they didn't get written in gold they didn't get written at all but it was too bad if anybody ignored any of them. have been his predecessors throughout the ages —on this day did the Jorgenson reflected sourly that the governors and the rulers of the and observe that anyone hindering this loyal and admirable gift must, by the operation of truth, vanish from sight and nevermore be seen face to face by any rational being." The high official rolled up the scroll, while Jorgenson exploded inside. realize what he had lost when no off-planet goods arrived on Thriddar. In time he'd speak and say and observe that he, out of his generosity, gave the loot back. Then the trading could resume. But Jorgenson didn't Jorgenson, boiling inside, nevertheless knew what he was doing. He said The high official looked at him in utter stupefaction. Nobody contradicted the Grand Panjandrum! Nobody! The Thrid had noticed long ago that they were the most intelligent race in the universe. Since that was so, obviously they must have the most perfect government. But no government could be perfect if its officials made mistakes. So no Thrid official ever made a mistake. In particular the great and could cross the compound without getting an electric shock that would discourage him. They began to believe. Jorgenson laid the matter indignantly before him, repeating the exact hysterically to be allowed to go home before Jorgenson vanished, with When Jorgenson opened a door to kick him out of it, the whole staff of Jorgenson swore impartially at all of them and turned the shocker-field against a multitude. As a business man, he'd acted very foolishly. But he'd acted even less probably typical. But it wasn't Jorgenson's affair. He'd been unwise to In theory, no Thrid should ever make a mistake, because he belonged to the most intelligent race in the universe. But a local governor was even more intelligent. If an ordinary Thrid challenged a local There'd been Ganti, a Thrid of whom Jorgenson had had much hope. He business would be decreased. There could be no human-Thrid friction. Jorgenson had been training Ganti for this work. Jorgenson couldn't find out what had become of him. Dour reflection on Now that the new Grand Panjandrum had moved against him, Jorgenson made Ganti and countless others had been victims of capricious tyranny.... And Jorgenson was slated to vanish from sight and never again be the trading-post denied him and Jorgenson still visible, he'd be Jorgenson dozed lightly. Then more heavily. Then more heavily still. of the sirens that should have awakened Jorgenson. Jorgenson would be gone and the trading post confiscated. It would be Jorgenson switched back to human swearing. Then he blended both Thrid laid Jorgenson down. "This is not good, Jorgenson. Who did you contradict?" The Thrid was Ganti, of whom Jorgenson had once had hopes as a business water for both of us. I wasn't sure they would." His calmness sobered Jorgenson. As a business man, he was moved to make "You've got brains, Ganti. What's the chance of escape?" "How'd this happen?" demanded Jorgenson the business man. "This is a prison," Ganti explained matter-of-factly. "They let me sleeping purposes. "And this?" "Somebody dug it out," said Ganti without resentment. "To keep busy. Maybe one prisoner only began it. A later one saw it started and worked on it to keep busy. Then others in their turn. It took a good many lives to make this cave." Jorgenson ground his teeth a second time. "And just because they'd contradicted somebody who couldn't be wrong! Or because they had a business an official wanted!" He offered food. Jorgenson ate, scowling. Afterward, near sundown, he was the cordage with which Jorgenson had been lowered. There was the Even the dried seaweed bed was not comfortable. Jorgenson slept badly Jorgenson was physically adjusted to the island. But neither as a dropped food and water, and went away. Once a water-bag burst when dropped. They lost nearly half a week's water supply. Before the copter Once Ganti abruptly began to talk of his youth. As if he were examining something he'd never noticed before, he told of the incredible conditioning-education of the young members of his race. They learned that they must never make a mistake. Never! It did not matter if they were unskilled or inefficient. It did not matter if they accomplished nothing. There was no penalty for anything but making mistakes or differing from officials who could not make mistakes. So Thrid younglings were trained not to think they were told by authority. It occurred to Jorgenson that on a planet with such a population, a skeptic could make a great deal of confusion. Then, another time, Jorgenson decided to make use of the weathering they even caught something to eat. But they never fished when the copter was due. Jorgenson found that a fish-fillet, strongly squeezed and wrung like a wet cloth, would yield a drinkable liquid which was not salt and would substitute for water. And this was a reason to make a string bag in which caught fish could be let back into the sea so they were there when wanted but could not escape. "They've only knives and scimitars," said Jorgenson. "They don't count. We can make better weapons than they have." Ganti looked skeptical. Jorgenson explained. He had to demonstrate crudely. The whole idea was novel to Ganti, but the Thrid were smart. it fails, they'll only stop giving us food and water." That, of course, did not seem either to him or Jorgenson a reason to hesitate to try what Jorgenson had planned. untwisting of more of the rope that had lowered Jorgenson. It went on a couple of inches wide and five or six long. They made light strong cords extend from the ends of the cloth strips. Then they practiced with these bits of cloth and the broken stones a former prisoner had practiced. When it came again they were not practicing, but when it went away they practiced. They were a naked man and a naked Thrid, left upon a morsel of rock in a boundless sea, rehearsing themselves in an art so long-forgotten that they had to reinvent the finer parts of the technique. They experimented. They tried this. They tried that. When the copter appeared, they showed themselves. They rushed upon the dropped bag containing food and water as if fiercely trying to deny When the copter went away Jorgenson and Ganti went briskly back to

<question>:
Why were Jorgenson and Ganti not put to death?

<options>:
A It was never ordered
B They had intellectually outsmarted the Thrid by making it seem a mistake to kill them
C They had ally Witnesses in the government that secretly kept them alive
D They proved to be useful in their resourcefulness

<answer>:

A