单项选择题

Questions 11 to 13 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.

There are so many international restaurants in the United States because

A.many foreign tourists visit the United States every year.
B.Americans enjoy eating out with their friends.
C.the United States is a country of immigrants.
D.Americans prefer foreign foods to their own foo