Figure 7-7 Figure 7-7 Shows Cost and Demand Curves

Multiple Choice

Figure 7-7 Figure 7-7 shows cost and demand curves facing a profit-maximising, perfectly competitive firm.
-Refer to Figure 7-7.Identify the firm's short-run supply curve.

A) the marginal cost curve
B) the marginal cost curve from a and above
C) the marginal cost curve from b and above
D) the marginal cost curve from d and above