The Figure Given Below Shows the Revenue and Cost Curves

The figure given below shows the revenue and cost curves of a perfectly competitive firm. Figure 9.2 MC: Marginal cost curve
MR: Marginal revenue curve
ATC: Average-total-cost curve
AVC: Average-variable-cost curve
Refer to Figure 9.2.Compute the profit earned by the firm at the profit-maximizing level of output.

A) $300
B) $450
C) $700
D) $500
E) $350