Which of the Following Best Illustrates the Actions That Are

Which of the following best illustrates the actions that are most consistent with implementing a trade protectionism policy?

A) Allowing a nation's currency value to ""float freely"" (with no manipulation) in an international exchange market.
B) Negotiating reductions in import/export tariffs as part of a trade agreeement.
C) Creating trade barriers that take the form of higher import/export tariffs or tighter trade quotas.
D) Congress passes the Trade Act of 2015 to allow the president's trade representative to negotiate trade treaties more efficiently and quickly.
E) both answers ""A"" and ""D"" are correct.