单选题
编号：2695553
1. Four countries operate within a customs union. One country proposes moving to a common market structure. What additional level of economic integration between the countries would most likelyarise if this change took place? They would:
- A.Establish common trade barriers against non-members.
- B.Begin to allow free movement of the factors of production.
- C.Establish common economic institutions and coordination of economic policies.
