Which of the Following Is True of Import Tariffs and Quotas

Which of the following is true of import tariffs and quotas?

A) They benefit domestic producers.
B) Domestic consumers gain because they purchase the output of domestic firms.
C) Specialization and comparative advantage are advanced by tariffs and quotas.
D) They tend to expand the volume of world trade.
E) Because they increase the output levels of domestic firms, they tend to lower domestic prices.