Which of the Following Is True About Maquiladoras

Which of the following is True about maquiladoras?

A) They are non-government organizations who donate enormous sums to influence Mexican elections.
B) They are foreign-owned factories in Mexico that may import parts and materials to the United States without tariffs.
C) None of the answer choices are correct.
D) They are agricultural workers who have permission to migrate seasonally between the United States and Mexico.