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

<passage>:
Getting specimens for the interstellar zoo was no problem—they battled for the honor—but now I had to fight like a wildcat to keep a display from making a monkey of me! It was our first day of recruiting on the planet, and the alien office. As I came down the block from the hotel, I could hear and see and smell them with ease. My three staff men, Auchinleck, Stebbins and Ludlow, walked shieldwise in front of me. I peered between them to size the crop up. The aliens came in every shape and form, in all colors and textures—and all of them eager for a Corrigan contract. The Galaxy is full of bizarre beings, but there's barely a species anywhere that can resist the old exhibitionist urge. "Send them in one at a time," I told Stebbins. I ducked into the be much help they tried to keep out of local squabbles unless they were really serious, and I knew from past experiences that no officials ever worried much about the state of my pocketbook. On the other hand, giving this slyster a contract might be a risky proposition. four feet high and five hundred pounds heavy. We already had a couple anything short of top rate. Next came a bedraggled Sirian spider who was more interested in a handout than a job. If there's any species we have a real over-supply of, it's those silver-colored spiders, but this seedy specimen gave it figured to pick up plenty of new exhibits here and we were right. It was the isolationism of the late 29th century that turned me into fifty of the reptilian natives of Ghryne, seven Sirian spiders, and no It was also my sad duty to nix a Vegan who was negotiating through a Ghrynian agent. A Vegan would be a top-flight attraction, being some 400 feet long and appropriately fearsome to the eye, but I didn't see how we could take one on. They're gentle and likable beings, but their upkeep runs into literally tons of fresh meat a day, and not just any old kind of meat either. So we had to do without the Vegan. tall and extremely thin, with pale blue eyes and dirty-blond hair, and though he was clean and reasonably well dressed, he had a shabby look about him. He said, in level Terran accents, "I'm looking for a job I don't mind conning the public from time to time, but I draw the line at getting bilked myself. "Look, friend, I'm busy, and I'm not known for my sense of humor. Or my generosity." "I'm not panhandling. I'm looking for a job." "Then try elsewhere. Suppose you stop wasting my time, bud. You're as This was the best con switch yet—an Earthman posing as an alien to get a job! But I wasn't buying it, even if I could appreciate his cleverness I didn't know it then, but before the day was out, I would have that reason. And, with it, plenty of trouble on my hands. The first harbinger of woe turned up after lunch in the person of a Kallerian. The Kallerian was the sixth applicant that afternoon. I "You will grant me a contract!" "Will you please sit down?" "As you prefer." My desk has a few concealed features which are sometimes useful in dealing with belligerent or disappointed trouble. The Kallerian stood motionless before me. They're hairy creatures, and Institute. And we're not currently in need of any Kallerian males, because—" "You will hire me or trouble I will make!" I opened our inventory chart. I showed him that we were already Earth, enroll a Gursdrinn, or the consequences will be terrible!" I'm a man of principles, like all straightforward double-dealers, and one of the most important of those principles is that I never let myself be bullied by anyone. "I deeply regret having unintentionally He glared at me in silence. I went on, "Please be assured that I'll undo the insult at the earliest possible opportunity. It's not feasible for us to hire another as a vacancy—" "No. You will hire me now." "It can't be done, Freeman Heraal. We have a budget, and we stick to it." Kallerian. And now, please, there are many applicants waiting—" You'd think it would be sort of humiliating to become a specimen in a all the others. I nudged the trouble-button on the side of my desk and Auchinleck and They surrounded the towering Kallerian and sweet-talkingly led him away. He wasn't minded to quarrel physically, or he could have knocked them both into the next city with a backhand swipe of his shaggy paw, came running in—" "Please, please," squeaked the little alien pitifully. "I must see you, honored sir!" "But—" "I must see her—her and this disgrace-bringing lover of hers. I must reason with her. Earthman, can't you see I must appeal to her inner flame? I must bring her back! It isn't, but another of my principles is to refuse to be swayed by sentiment. I felt sorry for this being's domestic troubles, but I wasn't going to break up a good act just to make an alien squirrel happy—not to mention footing the transportation. I said, "I don't see how we can manage it. The laws are very strict on the subject of bringing alien life to Earth. It has to be for "Of course not." I took advantage of his pathetic upset to steam right along. "Now if you had come in here and simply asked me to sign you up, I might conceivably have done it. But no—you had to go unburden your heart to me." "I thought the truth would move you." "It did. But in effect you're now asking me to conspire in a fraudulent criminal act. Friend, I can't do it. My reputation means too much to me," I said piously. "Then you will refuse me?" "My heart melts to nothingness for you. But I can't take you to Earth." uneasy feeling I had just been talking to a being who was about to commit suicide on my account. About fifty more applicants were processed without a hitch. Then life started to get complicated again. Nine of the fifty were okay. The rest were unacceptable for one reason or another, and they took the bad news quietly enough. The haul for the staff." "I don't care outside is . He doesn't know how to handle alien beings. How many times today has a life-form come in here unexpectedly?" I scowled at him. "Too damn many." "You see? He's incompetent. Suppose you fire him, take me on instead. I've been living in the outworlds half my life I know all there is to I took a deep breath and glanced all around the paneled ceiling of the office before I spoke. "Listen, Gorb, or whatever your name is, I've had a hard day. There's been a Kallerian in here who just about "—that your unethical actions have directly contributed to the untimely death of an intelligent life-form," filled in the second of the Ghrynian policemen. and stationed itself limply near the threshold. The three Ghrynian policemen and my three assistants forgot the dead Kallerian for a moment and turned to eye the newcomer. did come, to figure out some more effective way of screening myself against plaster was everywhere. The police were effectively cocooning the struggling little alien in an unbreakable tanglemesh. psychology, Corrigan," Gorb said lightly. "Suicide is completely abhorrent to them. When they're troubled, they kill the person who caused their trouble. In this case, you." I began to chuckle—more of a tension-relieving snicker than a full-bodied laugh. "Funny," I said.

<question>:
Why were the Sirian spiders rejected for the travel plan?

<options>:
A They demanded too high of payment.
B They had an over-supply of their species.
C They all expected a handout
D They were difficult to work with.

<answer>:

B