One of the Major Advantages of Maquiladoras for American Companies

One of the major advantages of maquiladoras for American companies is what?

A) They are able to hire Mexican workers for much lower wages than they would have to pay American workers.
B) These areas subscribe to no country's laws on pollution.
C) These areas often have lax child-labor laws which allow workers as young as 12 to work in factories.
D) Companies in these areas have to pay no corporate income tax.