Suppose that a firm's production function is given by Q = K^0.33L^0.67, where MPK = 0.33K−0.67L^0.67 and MPL = 0.67K^0.33L−0.33. As L increases, what happens to the marginal product of labor? What happens to the marginal product of capital?
MPL increases; MPK increases
MPL decreases; MPK decreases
MPL decreases; MPK increases
MPL increases; MPK decreases