Which of the following best explains the difference between an absolute monarchy and an oligarchy?

A.
An empire that rules over multiple kingdoms is an oligarchy; each kingdom is a monarchy.

B.
An oligarch is a single individual who wields power; a monarchy is ruled by an elite group.

C.
An oligarchy is ruled by an elite group; an absolute monarchy is ruled by a single individual.

D.
An oligarchy allows for freedom of religion; a monarchy gives power to members of a church.