A Firm Has Fixed Costs of $4,000

Multiple Choice

A firm has fixed costs of $4,000.Its short-run production function is y = 4x^1/2, where x is the amount of variable factor it uses.The price of the variable factor is $4,000 per unit.Where y is the amount of output, the short-run total cost function is

A) 4,000/y + 4,000.
B) 8,000y.
C) 4,000 + 4,000y.
D) 4,000 + 250y2.
E) 4,000 + 0.25y2.