________ are forces that cause a reduction in a firm's average cost as the scale operation increases in the long run. ________ are forces that cause a firm's average cost to increase as the scale of operation increases in the long run
a. Diseconomies of scale; economies of scale.
b. Economies of scale; diseconomies of scale.
c. Increasing returns to a factor; decreasing returns to a factor
d. Decreasing returns to a factor; increasing returns to a factor
b
Economics