Dominance Hierarchies Present in Social Animals Lead To

Dominance hierarchies present in social animals lead to:

A) increased levels of aggression in the group as members fight to gain or reclaim status
B) decreased levels of aggression except for when a new member joins or a member challenges another for a better position
C) decreased levels of aggression as there is no need for aggression except for when the leader dies
D) increased levels of aggression as members fight to obtain better resources