Because the Productivity of Labor Decreases as the Quantity of Labor

Multiple Choice

Because the productivity of labor decreases as the quantity of labor employed increases,

A) the aggregate production function shifts upward as the real wage rate decreases.
B) the labor demand curve shifts right as the real wage rate decreases.
C) the quantity of labor a firm demands increases as the money wage rate decreases.
D) the quantity of labor a firm demands increases as the real wage rate decreases.