Suppose the Market Demand for Good X Is Given by Q_X^d

Multiple Choice

Suppose the market demand for good X is given by Q_X^d = 20 - 2P_X. If the equilibrium price of X is $5 per unit then consumers' expenditure on X is

A) $5.
B) $25.
C) $50.
D) cannot be determined from the information contained in the question.