Which of the Following Statements Is Most Accurate

Which of the following statements is most accurate?

A) Historically,there has been conflict between groups wanting to suppress trade and groups wanting to peg exchange rates
B) Since the late 1940s,import restrictions have fallen
C) Resentment of imports always increases during economic expansions
D) The U.S.government engaged in a free trade campaign up to the end of World War II
E) None of the above