Exhibit 22-7 ​ Refer to Exhibit 22-7. at the Profit-Maximizing Level of Output

Exhibit 22-7 ​

Refer to Exhibit 22-7. At the profit-maximizing level of output, marginal cost is

A) $60.00.
B) $4.50.
C) $5.00.
D) $6.00.
E) This cannot be determined based on the information provided.