Suppose That Each Worker Must Use Only One Shovel to Dig

Multiple Choice

Suppose that each worker must use only one shovel to dig a trench,and shovels are useless by themselves.In the long run,the firm's cost function is

A) TC = (w/r) ∗ q.
B) TC = (w + r) /q.
C) TC = (w + r) .
D) TC = (w + r) ∗ q.