Concerning the E.U.，which of the following statements is wrong？（）

• A、A college student in Greece can get a job in the U.K.in summer vocation.
• B、All the member countries adopt the currency，euro.
• C、The executive body of the E.U. is the European Commission，headquartered in Brussels.
• D、The Council of Ministers has the final power to decide E.U.actions.