单项选择题

Questions 11 to 14 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions.
Now, listen to the passage.

What measure has been taken in San Francisco to reduce the destruction of school property

A.Rewarding schools that have decreased the destruction.
B.Encouraging students to attend more extracurricular activities.
C.Promoting teachers who can prevent the destruction.
D.Increasing spend on repairs and replacements.