Suppose the Production Function for a Bakery Is

Suppose the production function for a bakery is:
Q = 4K^0.4L^0.6
Where Q is the number of loaves of bread produced per day, K is the number of ovens, and L is the number of workers employed. Suppose that the wage rate is $5 per hour, the rental rate of capital is $10 per hour, and the baker wants to produce 4,000 loaves of bread. The firm's demand for labor is ____.

A) L = 2.95W^-0.4
B) L = 2.95W^-0.6
C) W = 2.95L^-0.4
D) L = 2.95W