Figure 5-2 A graph of price, P, versus quantity, Q, is a demand curve consisting of a straight line descending from (0, P = A) to (Q = C, 0). Three points are shown on the curve. Point A is at (0, P = A), Point B is approximately at the midpoint of the line, and Point C is at (Q = C, 0). Refer to Figure 5-2. The section of the demand curve from A to B represents the a. unit elastic section of the demand curve. b. perfectly elastic section of the demand curve. c. inelastic section of the demand curve. d. elastic section of the demand curve