The checkerboard model shows that if involuntary segregation disappeared from society, people would likely no longer segregate themselves

If firms in a monopolistically competitive industry are making profits in the short run

A) some firms will ultimately exit the industry. B) barriers to entry will be erected to keep out rivals. C) new firms will enter the market. D) they will resort to advertising wars to help sustain these profits.

In an oligopoly market, firms do not produce identical product

a. True b. False Indicate whether the statement is true or false