Which of the Following Was Likely an Effect of the Unification

Multiple Choice

Which of the following was likely an effect of the unification of European markets?

A) Many of the taxes and rules that had limited trade among member countries of the European Union were eliminated.
B) The need to adjust strategies to reach submarkets of European consumers disappeared.
C) Firms operating in Europe had more difficulty obtaining access to large markets.
D) Consumer prices rose and job opportunities became limited.
E) The unification complicated inter-European commerce and trade directly.