-The Above Figure Shows the Demand and Cost Curves for a Monopolistically

-The above figure shows the demand and cost curves for a monopolistically competitive firm in the long run. The firm maximizes its profit by

A) producing 8 units and charging a price of $5.
B) producing 8 units and charging a price of $15.
C) producing 16 units and charging a price of $10.
D) producing 20 units and charging a price of $25.