The Principal Function of the Trade Sanctions the U

The principal function of the trade sanctions the U.S.has in place against Cuba is to

A) prevent other countries from trading with Cuba.
B) aid Cuba in creating a direct trade route to the U.S.
C) create a nearby dumping site for large businesses.
D) impoverish Cuba to lead to the downfall of the communist government.
E) force Cuba to enter into the NATO agreement.