The Figure Given Below Shows the Revenue and Cost Curves

Multiple Choice

The figure given below shows the revenue and cost curves of a perfectly competitive firm.Figure 10.2
MC: Marginal cost curve
MR: Marginal revenue curve
ATC: Average-total-cost curve
AVC: Average-variable-cost curve
-Refer to Figure 10.2. If the marginal-revenue curve would have intersected the average-total-cost curve at the latter's lowest point and the firm maximized profit, then total profit would have been equal to:

A) $30.
B) zero.
C) -$10.
D) $20.
E) -$20.