A Firm Is Hiring Resources X, Y, and Z in the Profit-Maximizing

Multiple Choice

A firm is hiring resources X, Y, and Z in the profit-maximizing amounts when

A) MRPx/Px equals MRPy/Py equals MRPz/Pz equals 1.
B) the sum of the MRPs of the three resources is at a minimum.
C) the marginal revenue productivity of all three resources is the same.
D) the marginal revenue product of the last dollar spent on each of the three resources is the same.