The United States May Impose a Tariff On

The United States may impose a tariff on:

A) radios to be sold in the United States by Taiwan at less than fair value, which would harm the American radio industry.
B) automobiles to be sold in the United States by Germany, which had subsidized them.
C) Canadian beef to be sold in the United States.
D) All of the above.
E) Only (a) and (b) .