Suppose That Three Consumers Are in the Market for Good

Multiple Choice

Suppose that three consumers are in the market for good X.Consumer 1's (inverse) demand is P_X = 40 − Q_X; Consumer 2's (inverse) demand is P_X = 50 − 2Q_X; and Consumer 3's (inverse) demand is P_X = 70 − 4Q_X.When P_X = $20,the market will demand:

A) 41 units.
B) 47.5 units.
C) 19.5 units.
D) None of the preceding statements is correct.