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) MRP_x/P_x equals MRP_y/Py equals MRP_z/P_z 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.