The 'Concert of Europe' Was Formed in Order to Achieve

The 'Concert of Europe' was formed in order to achieve which of the following?

A) Promote multilateral diplomatic relations in nineteenth century Europe.
B) Develop stronger bilateral diplomatic relations between the Great Powers in nineteenth century Europe.
C) Strengthen European alliances with non-European powers in the late nineteenth century.
D) Entice the leadership of the Ottoman Empire to join forces with the Great Powers of Europe in the early nineteenth century.