Diseconomies of scale exists over the range of output for which the long-run average cost curve is:

Replacing employment-based health care with a government-run system could reduce employers payments for their workers insurance, but the amount that they would have to pay in overall compensation

A) would dramatically increase. B) would fall to zero. C) would dramatically decrease. D) would remain essentially unchanged.

Can a firm's average variable costs be falling if they are less than the firm's marginal costs? Explain