Exhibit 8-7 -At Which Price and Quantity Is Profit Maximized for the Maximized

Exhibit 8-7
-At which price and quantity is profit maximized for the perfectly competitive firm represented in Exhibit 8-7?

A) $40 and 80
B) $8 and 70
C) $4 and 40
D) $40 and 70
E) $8 and zero output