The Minimum Efficient Scale for a Firm Is the

Multiple Choice

The minimum efficient scale for a firm is the

A) lowest rate of output at which long-run average cost is at a minimum
B) lowest rate of output at which short-run average total cost is at a minimum
C) lowest rate of output at which short-run average variable cost is at a minimum
D) average of the rates of output at which long-run average cost is at a minimum
E) average of the rates of output at which short-run average total cost is at a minimum