Metternich's Dream of a Concert of Europe to Maintain the Established

Metternich's dream of a Concert of Europe to maintain the established order failed

A) because Britain disapproved of direct intervention in the affairs of other European states.
B) because Alexander I set up a Holy Alliance to compete with the Concert.
C) because the Prussians did not want to take part in an organization that was dominated by Metternich.
D) both because Britain disapproved of direct intervention in the affairs of other European States and because Alexander I set up a Holy Alliance to compete with the Concert.
E) All these answers are correct.