依據(jù)短文選最佳答案：
High Schools in the USA
In most middle schools and high schools in the USA,students are encouraged to join a club.These groups generally meet at the end of the school day for an hour or two.Students do not have asale or raise money in another way.For example,a cooking club might make and sell cookies to other students.A music club might decide to wash cars in the school parking lot on a Saturday.The students' parents bring their cars and pay to have them washed by the club members.
Question:Who help to get the money?A.The teachers.B.The club leaders.C.The parents.