在线等 ! Are you forty years old and fat?

在线等 ! Are you forty years old and fat?
Are you forty years old and fat? Do you wear fine clothes? Do you look rich? If so, be careful. There is a pickpocket (扒手) looking for you. World travelers, away from home and usually carrying much money, are often troubled by pickpockets in foreign countries, but they should remember that there are pickpockets in their own country, too.
A typical pickpocket is under forty years of age, usually a male. He has nimble (灵敏的) fingers and has trained himself in running. Generally, he carries a newspaper or magazine in his hand. He may appear fairly clever and pretend to be calm. He has learned his job from another pickpocket, and he repays his “ teacher ” by giving him a percentage of the money or things which he steals.
The good pickpocket always operates in crowded places. Very well—dressed men and slightly drunken men are the favorite objects of the pickpocket.
An average—sized department store hires about six or seven full—time detectives. These men and women are constantly looking for pickpockets and thieves. Many police districts have detectives whose only job is to catch the pickpockets quickly. But a good pickpocket know these things and is very careful. He is especially busy on buses, trains and subways (地铁) between 11:00 a. m. and 3:00 p. m. When there are many shoppers with much money to spend. He carefully remembers the payday and bonus (奖金) times of companies.
Pickpocket and stealing from a shop together represent about 75% of daytime petty crime in America. The sentence for these crimes is usually from three to five years in prison. After finishing their sentence, pickpockets and thieves seldom reform; they usually advance to more serious crimes.
The author is attempting to _______________.
A.warn us against pickpockets
B.help us to learn some pickpocket’s skills
C.tell us how pickpockets steal things
D.prove himself to be a good detective