Which Political Action Is Most Likely to Favor International Marketing

Which political action is most likely to favor international marketing?

A) placing trade embargoes on Cuba owing to widespread political instability in the country
B) the U.S. government placing a trade ban on Libya owing to rampant terrorism
C) South Africa abolishing apartheid and the U.S. lifting the embargo
D) tariff hike for imports established by China
E) the U.S. government coupling human rights issues with foreign trade policy