Q:I am a movie director and I just received the following movie plot. Could you help me answer this question? If not, let me know by writing "Not answerable". Plot title: American Psycho Movie plot: In 1987, wealthy New York investment banker Patrick Bateman's life revolves around dining at trendy restaurants while keeping up appearances for his fiancee Evelyn and for his circle of wealthy and shallow associates, most of whom he dislikes. Bateman describes the material accoutrements of his lifestyle, including his daily morning exercise and beautification routine. He also discusses his music collection, with performers such as Huey Lewis and the News, Phil Collins, and Whitney Houston. His focus on a lavish lifestyle is also evident by his taste in expensive designer clothing and his luxurious apartment. Bateman and his associates flaunt their business cards in a display of vanity. Enraged by the superiority of co-worker Paul Allen's card, Bateman murders a homeless man and kills the man's dog. At a Christmas party, Bateman makes plans to have dinner with Paul, with Paul mistaking Bateman for another coworker, Marcus Halberstram. Bateman gets Paul drunk and lures him back to his apartment. While playing "Hip to Be Square" on the stereo, explaining to Paul his opinion and interpretation of the song, and while wearing a rain coat, Bateman ambushes Paul and murders him with an axe. He disposes of Paul's body, then goes to Paul's apartment to stage the situation so that others believe Paul has run off to London. Bateman is later interviewed about Paul's disappearance in his office by private detective Donald Kimball, hired by Paul's family. During the night, Bateman takes two prostitutes, whom he names Christie and Sabrina, to his apartment and explains to them the improvement he saw in the band Genesis after they moved away from progressive rock toward a more pop rock sound beginning with the album Duke. After they have sex, Bateman tells them to stay, while taking out instruments he uses for torture. In the next scene, the prostitutes leave his apartment bruised and bloodied. The next day, Bateman's colleague Luis Carruthers reveals his new business card. Bateman tries to kill Luis in the restroom of an... My question: What is Christie and Sabrina's profession?
A:
Prostitution