NAFTA Creates a Free Trade Area in North America

NAFTA creates a free trade area in North America.However, Mexican avocado growers:

A) cannot hire illegal immigrants.
B) can only ship avocados to the U.S.in winter months.
C) have no quotas for the quantity of avocados shipped to the U.S.
D) cannot impose tariffs of their own.
E) none of the above