If a Firm Is Unable to Distinguish Which of Their

If a firm is unable to distinguish which of their buyers has inelastic demand and which has a relatively elastic demand, then the firm will be unable to price discriminate because they will:

A) not know how much of the product to offer for sale.
B) not know enough about their customer base to prevent resale.
C) not know which price to charge which customer.
D) not know how many of their customers will buy the product when it is offered for sale.
E) be unable to predict how much of their sales will be retained as profit.