The Production Function Is F(L, M)= 4L^1/2 M^1/2, Where L

Multiple Choice

the production function is f(L, M) = 4L^1/2 M^1/2, where L is the number of units of labor and M is the number of machines used.If the cost of labor is $100 per unit and the cost of machines is $16 per unit, then the total cost of producing 7 units of output will be

A) $140.
B) $406.
C) $112.
D) $280.
E) None of the above.