How Did the Congress of Vienna (1814-1815) Set the Parameters

How did the Congress of Vienna (1814-1815) set the parameters for future relations between European states?

A) It shifted the balance of power from western to eastern Europe, as powerful leaders from Austria and Prussia took control of diplomatic and military negotiations.
B) It set limits on the number of military troops each country could maintain in order to limit future aggression and territorial expansion.
C) It established a new framework for international relations based on periodic meetings, or congresses, between the major powers.
D) It imposed severe penalties on France in order to greatly diminish its political and economic status, which served as a warning to other countries considering territorial expansion.