question archive If the four-firm concentration ratio for an industry equals 100 percent, then definitely A
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If the four-firm concentration ratio for an industry equals 100 percent, then definitely
A. there are no barriers to entry into the industry.
B. the Herfindahl-Hirschman Index (HHI) equals 10,000.
C. a small number of firms are in the industry.
D. the industry is a monopoly.
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