A 5- Firm Concentration Ratio Shows

A 5- firm concentration ratio shows

A) the proportion of industries in the economy that have just five firms.
B) the size of the largest firm relative to the total size of the five largest firms.
C) the share of industry profits earned by the five largest firms.
D) the output of good X produced by the five largest firms, as a proportion of their total output of all types of goods.
E) the sales of the five largest firms, as a proportion of the total industry sales.