Dominant Strategy : Nash Equilibrium :: Firm A's advertising strategy : ?

In game theory, a dominant strategy is a choice that is the best for a player, no matter what the other players do. A Nash Equilibrium occurs when players choose their strategies in a way that no one can benefit by changing their own choice while the others keep theirs the same. So, if we think about Firm A's advertising strategy, we can compare it to a situation where Firm A chooses the best advertising plan based on what other firms are doing. For example, if Firm A finds that increasing its advertising always leads to higher sales, regardless of how much competitors advertise, that would be a dominant strategy for them. Therefore, Firm A's advertising strategy can be related to its best choice that leads to a stable outcome, similar to how a Nash Equilibrium works in a game.