The 1994 Trade Agreement Among the United States, Canada, and Mexico

The 1994 trade agreement among the United States, Canada, and Mexico:

A) is known as the North American Free Trade Agreement, or NAFTA.
B) has been a source of debate over issues such as working conditions, laborers' rights, and the environment.
C) has benefited the Mexican economy by allowing it to import inputs from the U.S., process them, and then return the finished products to the U.S. as exports.
D) all of the above.