In a competitive market, Gary's Gym and eFitness have reached a Nash equilibrium where Gary's Gym lowers its prices while eFitness increases its advertising. If eFitness decides to decrease its advertising budget without consulting Gary's Gym, which of the following outcomes best reflects the concept of Nash equilibrium in this scenario?

In a Nash equilibrium, each player in a competitive market makes the best decision they can, considering the decisions of their competitors. In this case, Gary's Gym has lowered its prices, and eFitness has responded by increasing its advertising. If eFitness decides to decrease its advertising budget without consulting Gary's Gym, it may affect their competitive position. Since Gary's Gym has already adjusted its strategy based on eFitness's previous decision, eFitness's new move could lead to a situation where both gyms are no longer optimizing their strategies. Therefore, the outcome may not reflect a Nash equilibrium anymore because eFitness's unilateral change could create an opportunity for Gary's Gym to adjust its prices again, leading to a new equilibrium.