Please help with this practice question.

A Nash equilibrium is an equilibrium in which 0 no trade-offs are made by buyers and sellers 0 each player chooses the same strategy no matter what the other players choose 0 maximum profits are earned by each player, due to cooperative decision making 0 the choice each player makes is a best response to the choice other players are making 0 cooperation between market participants leads to self-serving but non-optimum results