If the Herfindahl-Hirschman index (HHI) for an industry is 300,the industry is considered:

A) unconcentrated.
B) highly concentrated.
C) oligopolistic.
D) monopolistic.

Herfindahl-Hirschman Index (HHI)

A measure of market concentration that is calculated by squaring the market share of each firm competing in a market and then summing the squares.

Unconcentrated

Refers to a market or industry where no single entity has a large market share, leading to a high level of competition.

Highly Concentrated

A market condition where a small number of firms hold a large market share.