Consider the following table of long-run total costs for three different firms:

Quantity 1 2 3 4 5 6 7

Firm A 10 21 32 43 54 66 80

Firm B 10 15 18 23 35 50 65

Firm C 10 19 28 37 46 55 60

Indicate whether each firm experiences economies of scale or diseconomies of scale. (Note: If a firm experiences economies of scale in one region and diseconomies of scale in another, make sure to select both columns.)

Firm Economies of Scale Diseconomies of Scale

A

B

C