A Nash equilibrium occurs when:

A) each firm is doing the best it can, given its opponents' actions.
B) each firm chooses the strategy that maximizes its minimum gain.
C) a player can choose a strategy that is optimal regardless of its rivals' actions.
D) there is no dominant firm in a market.

Nash Equilibrium

A situation in strategic interactions where each participant's choice is optimal, considering the decisions of others.

Firm

An organization engaged in commercial, industrial, or professional activities, typically aimed at generating profits.

Optimal

The best or most favorable point, level, or condition, especially under specific constraints or conditions.