Which of the Following Statements About NAFTA Is FALSE

Which of the following statements about NAFTA is FALSE?

A) NAFTA is a free trade zone and not a customs union
B) Canada,Mexico,and the U.S.are the only three members of NAFTA
C) It is difficult to empirically measure the economic effects of NAFTA on the U.S.economy
D) In the long run,NAFTA will increase the number of low-paid jobs in the U.S
E) NAFTA is based on the belief that nations,in the aggregate,gain economically from free international trade