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. What is the firm's total fixed cost at the profit-maximizing output level?

A) $400
B) $300
C) $600
D) $450
E) $500