Corporate concentration can be measured by

A) only the concentration ratio.
B) only the Herfindahl-Hirschman index.
C) both the concentration ratio and the Herfindahl-Hirschman index.
D) neither the concentration ratio nor the Herfindahl index.

Corporate concentration can be measured by both the concentration ratio and the Herfindahl-Hirschman index. The concentration ratio measures the market share of the largest firms in an industry, while the Herfindahl-Hirschman index takes into account the market share of all the firms in the industry. Using both measures provides a more complete picture of the level of concentration in the industry.