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

<passage>:
PUSHBUTTON ARRANGEMENT WERE NECESSARY, I COULD PUSH THE BUTTON MYSELF. and eviction if he came away from this interview still unemployed. They jolted him. The distribution transformers were ten times as large as they should have been for a plant this size. Something else was wrong. Peter looked for minutes before he found out employees' entrance was on the third side. set to straight-arm the door, he almost fell on his face. The door had his calm was blasted away by a bellow from within. "Don't stand out there like a jackass! Either come in or go away!" Peter started, opened his mouth to answer, closed it again. He'd been sent had been turned away. That meant bluffs didn't work. Neither, he'd In precis form, Peter listed his observations: the absence of windows at sides and rear, the unusual amount of power, the automatic doors, the lack of employees' entrances. The office door opened, and Peter found himself being led down the disorganized machinery, Peter noticed that the factory lights high overhead followed their progress, turning themselves on in advance of their coming, and going out after they had passed, keeping a pool machines, apparently self-powered, rolled noiselessly up to the door in trace of anger not yet gone from his voice. "When an order is received, they're too noisy for me to explain what's going on while we're there." that was laboring beside him at the moment. Nervously, he looked for an exit, but his apprehension was unnecessary. The machines seemed to know where they were and avoided the two men, or stopped to wait for them to room where a typewriter could be heard clattering away. "Standard keyboard, "incoming mail is sorted and inquiries are replied to. In idiotic notions about specialization." Lexington mopped his forehead with a large white handkerchief. Apparently the walk through the factory had tired him considerably, although it hadn't been strenuous. They bounced me out of the course, and I re-entered in engineering, determined not to make the same mistake again. But I did. I got too absorbed in those parts of the course that had to do with electrical theory and lost the rest as a result. The same thing happened when I wife, whom I'm afraid I had neglected for the sake of the business, was killed in a car accident about then, and rightly or wrongly, that made me angrier with the union than anything else. If the union hadn't made things so tough for me from the beginning, I'd have had more time "For the next few years, I concentrated on getting rid of as many employees as I could, by replacing them with automatic machines. I'd design the control circuits myself, in many cases wire the things up myself, always concentrating on replacing men with machines. But it wasn't very successful. I found that the more automatic I made my business I got, and the more I had to expand." Lexington scowled. "I got sick of it. I decided to try developing one multi-purpose control circuit that would control everything, from ordering the raw materials to shipping the finished goods. As I told and from studies of nerve tissue in particular, plus my electrical knowledge, I had a few ideas on how to do it. It took me three years, but I began to see that I could develop circuitry that could remember, work for me. "By creating the proper compounds, with their molecules arranged in predetermined matrixes, I found I could duplicate electrical circuitry in units so tiny that my biggest problem was getting into and out of the logic units with conventional wiring. I finally beat that the same started working, to see my old company go belly up. This company bought the old firm's equipment for next to nothing and I wound up with all my assets, but only one employee—me. "I thought everything would be rosy from that point on, but it impossible hours. I added a couple of new pieces of equipment to the control section. One was simply a huge memory bank. The other was a comparator circuit. A complicated one, but a comparator circuit nevertheless. Here I was working on instinct more than anything. I figured that if I interconnected these circuits in such a way that would be able to control the plant, continuing the various patterns of activity that I'd already established." Here Lexington frowned. "It didn't work worth a damn! It just sat there and did nothing. I couldn't understand it for the longest time, and then I realized what the trouble was. I put a kicker circuit into it, a sort of voltage-bias network. I reset the equipment so that while it was still under instructions to receive orders and produce goods, its prime purpose was to activate the kicker. The kicker, however, could only be activated by me, manually. Lastly, I set up one of the early every order, to be fed into the memory banks. That did it." "I—I don't understand," stammered Peter. "Simple! Whenever I was pleased that things were going smoothly, I pressed the kicker button. The machine had one purpose, so far as its logic circuits were concerned. Its object was to get me to press that button. Every day I'd press it at the same time, unless things weren't going well. If there had been trouble in the shop, I'd press it late, of time, I'd press it ahead of time, or maybe twice in the same day. Pretty soon the machine got the idea. "I'll never forget the day I picked up an incoming order form from one of the western jobbers, and found that the keyboard was locked when I tried to punch it into the control console. It completely baffled me at first. Then, while I was tracing out the circuits to see if I could discover what was holding the keyboard lock in, I noticed that the order was already entered on the in-progress list. I was a long time convincing myself that it had really happened, but there was no other explanation. "The machine had realized that whenever one of those forms came in, I console keyboard, thus activating the producing mechanisms in the back of the plant. The machine had done it for me this time, then locked the keyboard so I couldn't enter the order twice. I think I held down the kicker button for a full five minutes that day." "This kicker button," Peter said tentatively, "it's like the pleasure might mean the difference between getting the job or losing it. "Exactly!" whispered Lexington, in an almost conspiratorial tone. "I had altered the circuitry of the machine so that it tried to give me pleasure—because by doing so, its own pleasure circuit would be activated. "Things went fast from then on. Once I realized that the machine Peter looked for the speaker in the side of the cart, saw nothing, and office, then snapped, "Look at those bloody cups!" Lexington stared at his cup without touching it for a long while. Then he continued with his narrative. "I suppose it's all my own fault. I didn't detect the symptoms soon enough. After this plant got working machine couldn't fix for itself." Handling the cup as if it were going to shatter at any moment, he took a gulp. "I began to see that the machine could understand the written word, and I tried hooking a teletype directly into the logic circuits. but how can you object on a point like that to a machine? Bear in mind that I had to be careful to behave reasonably at all times, because the machine was still learning from me, and I was afraid that any tantrums I threw might be imitated." "It sounds pretty awkward," Peter put in. "You don't know the half of it! As time went on, I had less and less to do, and business-wise I found that the entire control of the operation was slipping from my grasp. Many times I discovered—too late—that the machine had taken the damnedest risks you ever saw on bids and contracts for supply. It was quoting impossible delivery times on some orders, and charging pirate's prices on others, all without any obvious reason. Inexplicably, we always came out on top. It would turn something, and I went to the control console to give the kicker button a long, hard push. The button, much to my amazement, had been removed,

<question>:
Why was the keyboard locked when the boss tried to put in an order?

<options>:
A The machine was mad at him
B He couldn't keep up with the mail
C The machine was helping him
D The system malfunctioned because of his tinkering

<answer>:

C