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 10.5
MC: Marginal cost curve
MR: Marginal revenue curve.ATC: Average-total-cost curve
AVC: Average-variable-cost curve
-An individual perfectly competitive firm's supply curve is its:

A) average-fixed-cost curve.
B) marginal revenue curve.
C) average-variable-cost curve.
D) marginal cost curve.
E) total cost curve.