Alvin is the only producer of soccer balls in a small mountain community, making him a monopolist. The graph shows the demand and marginal revenue curves for soccer balls. Assume Alvin must charge the same price to all customers and the marginal cost is constant at $C

If the profit-maximizing price is $7, what is C? A) $2

B) $4

C) $6

D) $8

Utility A 9 8 7 6 B 5 4 3 2 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 Money