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.

Why do you think the teller gave Joe the money

A.Because he had a letter of thanks.
B.Because he feared that he might be killed if be refused.
C.Because he gave him a demand note.
D.Because he showed him a cheque payable at sight.