单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. According to the passage, the two very famous writers of advice are ______.

A.doctors with much experience
B.educators with special training
C.experienced housewives with no special training
D.women with much experience but no special training