Answer:
b. Gas stations with infrequently used pumps are located at all four corners of an intersection.
Step-by-step explanation:
A monopolistic competition is when there are many firms selling differentiated products in an industry.
examples of monopolistic competition are restaurants
Excess capacity occurs when in long-run a firm produces output that is less than socially optimum. it is when firms do not produce at the level of output at which long-run average cost is minimum.