The following picture shows a customer's monthly individual demand function for dry cleaning (where quantity is number of suits cleaned) as well as the cleaner's marginal cost (which is increasing?more suits per month requires quicker turnaround).

Which of the following is a profit-maximizing, quantity-based price-discrimination scheme for the dry cleaner?

Select thesingle, bestanswer to the question.

Group of answer choices

a) A membership fee equal to the combined areas of Regions A, B, C and D that gives the customer the right to have an unlimited number of suits cleaned.

b) A 15-suit package offered at a price equal to the combined areas of Regions B and C.

c) A 15-suit package offered at a price equal to the combined areas of Regions A and B.

d) A membership fee equal to the combined areas of Regions A and B and a unit price of $3 per suit.

e) A membership fee equal to the area of Region A and a unit price of $3 per suit.