Which One of the Following Is a Characteristic That Increases

Multiple Choice

Which one of the following is a characteristic that increases the benefit of a single currency?

A) A high degree of trade integration among the countries of the common currency area.
B) A high degree of political cooperation among the countries of the common currency area.
C) A common defence policy among the countries of the common currency area.
D) A similar climate in the countries of the common currency area