If the Four-Firm Concentration Ratio Is 0

Multiple Choice

If the four-firm concentration ratio is 0.55, and the top four firms account for $25 million in sales, it follows that total industry sales equal

A) $28.57 million.
B) $12.00 million.
C) $35.00 million.
D) $55.56 million.
E) $45.45 million.