In a monopoly,the four-firm concentration ratio is
A)75 percent.
B)100 percent.
C)almost zero.
D)25 percent.
E)50 percent.

Question

Quizplus · Accepted Answer

In a monopoly, there is only one firm operating in the market, therefore the concentration ratio would be 100 percent. The concentration ratio measures the total market share of the top four firms in the industry, but in this case there is only one firm, so its market share is 100 percent.

In a Monopoly,the Four-Firm Concentration Ratio Is