Which of the Following Statements About Tariffs on Goods Entering

Which of the following statements about tariffs on goods entering the United States is true?

A) There are no tariffs on any goods entering the United States.
B) All countries importing goods to the United States pay the same tariff.
C) Tariffs are imposed only on goods entering the United States from countries such as Cuba and North Korea.
D) Countries such as Cuba and North Korea importing goods to the United States pay a higher tariff than other countries.