Consider the Following Short-Run Cost Curves for a Profit-Maximizing Firm

Multiple Choice

Consider the following short-run cost curves for a profit-maximizing firm in a perfectly competitive industry. FIGURE 9-2
-Refer to Figure 9-2.The short-run supply curve for this perfectly competitive firm is its

A) ATC curve at and above $3.
B) AVC curve at and above $1.50.
C) entire marginal cost curve.
D) marginal cost curve at and above $3.
E) marginal cost curve at and above $1.50.