Many Observers Believe That Regional Trade Arrangements

Many observers believe that regional trade arrangements

A) don't pose a threat to the multilateral trade system.
B) pose a challenge to the WTO because they don't offer a more discriminatory way to organize world trade.
C) don't pose a challenge to the WTO because they offer a more preferential market access to another country located in the same region of the world.
D) don't pose a challenge to the WTO because they offer a more discriminatory way to organize world trade.
E) pose a challenge to the WTO because they offer a more preferential market access to another country located in the same region of the world.