Which of the Following Statements Is True About the Price

Which of the following statements is true about the price that a monopolist charges?

A) The price is the same as the price that would be charged if there was perfect competition.
B) The difference between the price charged by a monopolist and a perfect competitor is due to differences in costs.
C) The value that society places on the last unit produced in a monopoly is greater than its cost.
D) Too much of the good is being produced in a competitive market and not enough is being produced in a monopoly. Due to the way that prices are set.