With Regard to "Power" in the International System, Constructivists Believe

With regard to "power" in the international system, constructivists believe that

A) power does not play an important role in the international system.
B) changes in the distribution of power is the key factor explaining change in the international system.
C) only the ideas of powerful states matter.
D) power is defined by the distribution of material capabilities.
E) the meaning of "power" can change over time.