The Figure Given Below Shows the Revenue and Cost Curves

Multiple Choice

The figure given below shows the revenue and cost curves of a firm. MC represents the marginal cost curve, AC the average cost curve, MR the marginal revenue curve, and AR the average revenue curve.Figure 9.4

-The demand curve faced by a perfectly competitive firm is:

A) perfectly inelastic.
B) relatively elastic.
C) unit elastic.
D) perfectly elastic.
E) relatively inelastic.