单项选择题

Questions 1 to 5 are based on an interview. At the end of the conversation you will be give 10 seconds to answer each of the following five questions.
Now listen to the interview.
What happened to the cats if the number of mice in a post office didn’t decline within 6 months

A.They were killed.
B.They were punished by not to be given food.
C.They had to change job.
D.They were dismisse