NAFTA Increased U.S. Investment in Mexico Because

NAFTA increased U.S. investment in Mexico because:

A) Mexico's infrastructure is better when compared to the U.S.
B) Mexico has substantially lower labor costs for low-skilled employees.
C) Mexico has been witnessing a gradual increase in transportation costs.
D) the U.S. wanted to create job openings for low-skilled labor in the U.S.
E) the U.S. wanted to provide only high-skilled labor opportunities for Americans.