Answer:
c.the producer charges a price greater than $4.50.
Step-by-step explanation:
The producer charges a price greater than $4.50. In monopolistic competition the demand curve lies above the marginal revenue curve. Price is determined by the demand curve and in this particular case price should be greater than marginal revenue curve meaning price is greater than $4.50 . Therefore the correct answer is c.the producer charges a price greater than $4.50.