单项选择题

Questions 14 to 17 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.

How should the American National Flag be displayed at an unveiling ceremony

A.It should be attached to the statue.
B.It should be hung from the top of the monument.
C.It should be spread over the object to be unveiled.
D.It should be carried high up in the air.