Please answer the following question: Write a multi-choice question for the following article, with the given choices and answer: Article: Disneyland may look like a straightforward theme park. But there's a secret world hidden behind the balloons, castles and cotton candy -- a place where wild cats wander at midnight, Mickey Mouse hides in the wallpaper, and movie stars drink martinis behind closed doors. Cat security -- It's not easy keeping the ground of Disneyland spotless, as well as free of unwanted pests. Every night after closing time, 200 wild cats were freed into the park to help keep the rodent population under control. Though Disney doesn't comment on the matter, rumor has it that the cat taskforce dates back to 1957. After unsuccessful attempts to chase them out of the park, Disney decided to put the cats to work instead. Hidden Mickeys--At Disneyland the round-eared Mickey Mouse image is everywhere. But you can also see hundreds of "Hidden Mickeys" across the park, which are very difficult to spot: they're camouflage in the architecture and landscaping as well as in the smallest stylistic details. Cocktail behind closed doors-- _ unless you can manage to get your name on the list at Club 33. The secret cocktail club has a limited membership of just 487 and a waiting list of approximately 14 years. Walt Disney designed the club as a special space to entertain possible investors; since then, it has hosted US presidents, film stars and foreign guests. Always on stage--At Disneyland, a doorman isn't a doorman, he is a "cast member". So are the large numbers of cashiers, painters, ride operators, gardeners and performers. All "cast members" are trained to follow a specific rule that helps preserve the Disney magic. On the list of dos and don'ts? Never break character. If wearing a costume that belongs in Fantasyland, don't set foot in Tomorrowland--it might Confuse visitors or break the park's orderly image. Cast members have a Disney "look book" that details the fresh-faced ideal--no long fingernails, beards, or unnaturally colored hair allowed. It's a return to Walt Disney's All-American standards: when the park opened even guests... Options: A they're in charge of the cleaning of the park B they're allowed to act as cleaners and guards C they have to keep watch in the daytime D they have a comfortable house to live in Answer: B they're allowed to act as cleaners and guards Question:
Answer:
The reason why there are many wild cats in Disneyland is that _ .