Why Are Political Purges a Common Step in the Rise

Multiple Choice

Why are political purges a common step in the rise of totalitarian governments?

A) Purges prevent the ruling group from becoming too big and unwieldy.
B) Purges allow leaders to eliminate rivals within the ruling group.
C) Purges prevent international opponents from taking power.
D) Purges prevent the possibility of a civil war.
E) Purges are necessary for maintaining the status quo.