The Figure Given Below Shows the Aggregate Demand and Supply

The figure given below shows the aggregate demand and supply curves of a perfectly competitive market.Figure 10.7

-Which of the following is true under monopoly?

A) Price is equal to marginal revenue.
B) Price is equal to marginal cost.
C) Price is less than marginal revenue.
D) Price is less than marginal cost.
E) Price is greater than marginal revenue.