In the Context of Established Economies,the European Union

In the context of established economies,the European Union:

A) has largely achieved the reality of a single currency and a regional central bank.
B) has eliminated all trade barriers among member countries.
C) subjects member nations to quotas on the manufacture and shipment of high-quality, low-cost goods.
D) imposes duties on member nations for the manufacture and shipment of high-quality, low-cost goods.