The Figure Given Below Shows the Aggregate Demand and Supply

Multiple Choice

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

-Which of the following is an assumption of the monopoly model?

A) There exists a large number of buyers and sellers.
B) There are no close substitutes of the good.
C) The firm faces a horizontal demand curve.
D) There is free entry and exit of firms.
E) The firm is a price taker.