A Firm Has the Production Function Q = KL, Where

Multiple Choice

A firm has the production function Q = KL, where K is the amount of capital and L is the amount of labor it uses as inputs.The cost per unit of capital is a rental fee r and the cost per unit of labor is a wage w.The conditional labor demand function L(Q, w, r) is

A) Qwr.
B) the square root of Qr/w.
C) Qw/r.
D) the square root of Qw/r.
E) Q/wr.