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 $10, and Campus Books has no fixed costs. The table below shows the reservation prices of the eight students enrolled in the class.StudentReservation Price($/Book)Q60R54S48T42U36V30W24X18 How many books will Campus Books sell if it must charge a single price to all of its customers?

A. 5
B. 7
C. 3
D. 4


Answer: A

Economics

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