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. If the price decreases in the region of the demand curve between points A and B, we can expect total revenue to a. stay the same. b. first decrease, then increase until total revenue is maximized. c. increase. d. decrease