Figure 13-2 Not yet answered Price Points out of 1.00 P Flag question Pa E G Pb Demand F H 0 Q Q Quantity Refer to Figure 13-2. The marginal revenue from selling the additional unit Qb instead of Qa equals Select one: A. the area (H - E). B. the area (G + H). O C. the area G. D. the area (E+F) - (G + H).