In the Short Run, a Firm Which Has Production Function

Multiple Choice

In the short run, a firm which has production function f(L, M) =4L^1/2M^1/2 must use 4 machines.If the cost of labor is $4 per unit and the cost of machines is $10 per unit, the short-run total cost of producing 72 units of output is

A) $504.
B) $288.
C) $720.
D) $728.
E) $364.