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

<passage>:
When I lifted the plate and poked holes in the seared plastic, I could see the pyramid growing smaller behind me, water gushing out of the base Two: The door was sealed, so there should be no more sabotage, accidental or deliberate. Three: The priests should be satisfied. The water was running again, my eyes had been duly burned out, and they were back in business. Which added up to— nothing, like butchering a few of them, that would make them antagonistic toward future ancestral messengers. I stripped off my tattered lizard suit back in the ship, very glad that it would be some other repairman who’d get the job. — undressed stone, without carvings or decorations. There was a shimmer of pyramid was a hollow basin filled with water. When I saw that, something clicked in my mind. Locking basin on top of it for water this was used to cool the reactor that powered the monstrosity. If the water was still there, the beacon was bottle. Normally, a repairman stays away from native cultures. They are poison. religion. A shiny metal temple out of which poured a constant stream of magic water—the reactor-cooling water pumped down from the atmosphere condenser on the roof. The radioactivity in the water didn’t hurt the natives. It caused mutations that bred true. A city was built around the temple and, through the centuries, the pyramid was put up around the beacon. A special branch of the priesthood served the temple. All went well until one of the priests violated the temple and destroyed the holy waters. There had been revolt, strife, murder and destruction since then. But still the holy waters would not flow. Now armed mobs fought around the temple each day and a new band of priests guarded the sacred fount. And I had to walk into the middle of that mess and repair the thing. It would have been easy enough if we were allowed a little mayhem. I exactly like them, just something close, to soothe the I would need and began to wire the suit. out-of-the-way dry spot where the amphibious natives would never go. A little before dawn, the eye hooked onto my shoulders and we sailed straight up. We hovered above the temple at about 2,000 meters, until it dropped over on his back. The others came running. They milled and mobbed and piled on top of one another, and by that time I had landed in the plaza fronting the temple. The priesthood arrived. little pieces of wind-torn plastic rained down. While the crowd was ogling this ascent, I walked through the temple doors. “I would talk with you, O noble priests,” I said. Before they could think up a good answer, I was inside. temple was a small one built against the base of the pyramid. I hoped I wasn’t breaking too many taboos by going in. I wasn’t stopped, so it looked all right. The temple was a single room with a murky-looking pool at one end. Sloshing in the pool was an I drew up my scaly figure in a noble gesture and pointed toward the ceiling. “I come from your ancestors to help you. I am here to restore the Holy Waters.” This raised a buzz of conversation behind me, but got no rise out of the chief. He sank slowly into the water until only his eyes were showing. I When I said this, I turned to jab a claw at the other priests, using the The First Lizard knew I was talking sense then and immediately called a meeting of the shamans. It, of course, took place in the public bathtub and I had to join them there. We jawed and gurgled for about an hour and settled all the major points. I found out that they were new priests the previous ones had all been boiled for letting the Holy Waters cease. They found out I was there only to help them restore the flow of the waters. They bought this, tentatively, and we all heaved out of the tub and trickled muddy paths across the floor. There was a bolted and guarded door that led into the “Undoubtedly you know of the rule,” he said. “Because the old priests did pry and peer, it was ruled henceforth that only the blind could enter the Holy of Holies.” I’d swear he was smiling, if thirty teeth peeking out of what looked like a crack in an charcoal complete with red-hot irons. All I could do was stand and watch my case you will have to blind me before I leave the Holy of Holies, not now. I need my eyes to see and mend the Fount of Holy Waters. Once the waters flow again, I will laugh as I hurl myself on the burning iron.” He eye-sockets red pits of burned flesh. They knew what I wanted and led the way without a word. . The trusting builders counted on the sign to do the I unzipped the front of my camouflage suit and pulled out the blueprints. With the faithful priests stumbling after me, I located the control room and turned on the lights. There was a residue of charge in from constant polishing. I checked the readings carefully and found just what I had suspected. polished the switches inside. While doing this, he had thrown one of the switches and that had caused the trouble. Rather the trouble. It wasn’t going to be ended by just reversing the water-valve switch. This valve was supposed to be used only for repairs, after the pile was damped. When the water was cut off with the pile in operation, it had started to overheat and the automatic safeties had dumped the charge down the pit. I could start the water again easily enough, but there was no fuel left in the reactor. about a tenth the size of the ancient bucket of bolts and produced at walls were at least three meters thick—and the pipe opening itself into a neat pile on the ship. I checked all the parts by screen before they were loaded in a metal crate. In the darkest hour before dawn, the heavy-duty eye dropped the crate outside the temple and darted away without being seen. I watched the priests through the pryeye while they tried to open it. When they had given up, I boomed orders at them through a speaker in the crate. They spent most of the day sweating the heavy box up through the narrow temple stairs and I enjoyed a good sleep. It was resting inside at the power leads. I even hooked a gadget to the water pipe so their Holy Waters would have the usual refreshing radioactivity when they started flowing again. The moment this was all finished, I did the job they were waiting for. I threw the switch that started the water flowing again. There were a few minutes while the water began to gurgle down through the dry pipe. Then a roar came from outside the pyramid that must have shaken its stone walls. Shaking my hands once over my head, I went down for the eye-burning ceremony. The blind lizards were waiting for me by the door and looked even was bolted and barred from the other side. “It has been decided,” a lizard said, “that you shall remain here forever and tend the Holy Waters. We will stay with you and serve your every need.” A delightful prospect, eternity spent in a locked beacon with three around the door jamb. There was a great crunching and banging from the junk piled against it, and then the door swung free. I threw it open. Before they could protest, I had pushed the priests out through it. the surface. “What lack of courtesy!” I shouted. He made little bubbles in the water. “The ancestors are annoyed and have decided to forbid entrance to the Inner Temple forever though, out of kindness, they will let the waters flow. Now I must return—on with the ceremony!” The torture-master was too frightened to move, so I grabbed out his hot under the plastiskin. Then I jammed the iron hard into my phony eye-sockets and the plastic gave off an authentic odor. A cry went up from the crowd as I dropped the iron and staggered in blind circles. I must admit it went off pretty well.

<question>:
Why were the buttons in the temple so polished?

<options>:
A The original builders had built them well.
B They were cleaned by the priests in reverence.
C They were worn from overuse.
D They were cleaned with the Holy Waters.

<answer>:

B