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Consider three market structures: monopolistic competition, perfect competition, and oligopoly

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Consider three market structures: monopolistic competition, perfect competition, and oligopoly. The Herfindahl-Hirschman Indices (HHIs) computed for the three industries are 265, 3,620, and 1,050, in no particular order. Which statement is most likely to be true?

a. The HHI for the oligopolistic market is 265; the HHI for the perfectly competitive market market is 1,050.

b. The HHI for the monopolistically competitive market is 1,050.

c. The HHI for the oligopolistic market is 265; the HHI for the perfectly competitive market is 3,620.

d. There is not enough information to assign these HHIs to the market structures listed.