Suppose Campus Books, a profit-maximizing firm, is the only supplier of the textbook for a given class. The marginal cost of supplying each book is constant and equal to $10, and Campus Books has no fixed costs. The table shows the reservation prices of the eight students enrolled in the class. CustomerReservation Price($/Book)Q60R54S48T42U36V30W24X18What will be Campus Books' economic profit if it must charge a single price to all of its customers?
A. $120
B. $128
C. $130
D. $180
Answer: C
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