One of the Most Important Aspects of LAIA That Differs

One of the most important aspects of LAIA that differs from LAFTA, its predecessor, is:

A) the differential treatment of member countries according to their level of economic development.
B) the inclusion of rules of origin.
C) the exclusion of tariff barrier.
D) that members are forbidden from establishing bilateral trade agreements among member countries.
E) introduction of a common currency for the member countries.