In the Monopoly Market Structure, New Firms

Multiple Choice

In the monopoly market structure, new firms

A) cannot profitably enter the industry, even in the long run
B) may freely enter and leave the industry in both the short run and the long run
C) may freely enter and leave the industry in the long run only
D) may freely enter and leave the industry in the short run only
E) have no incentive to enter the industry, even if economic profits are present