单项选择题

Questions 1 to 4 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions.
Now, listen to the conversation. What does the woman say was the most difficult part of her job

A.Handling customer complaints.
B.Recruiting and training new staff.
C.Dispatching ordered goods on time.
D.Developing computer programs.