Dear Friend,
As compared to this, Nash equilibrium (named after John Forbes Nash, who proposed it) is a solution concept of a game involving two or more players, in which each player is assumed to know the equilibrium strategies of the other players, and no player has anything to gain by changing only his or her own strategy unilaterally. If each player has chosen a strategy and no player can benefit by changing his or her strategy while the other players keep theirs unchanged, then the current set of strategy choices and the corresponding payoffs constitute a Nash equilibrium.
Nash Equilibrium is also defined as If there is a set of strategies with the property that no player can benefit by changing her strategy while the other players keep their strategies unchanged, then that set of strategies and the corresponding payoffs constitute the Nash Equilibrium.
The both are defined as above. SInce you have tried almost everything, what exactly you want to know ??
Regards,
Ok.. I understood your question now.. In my opinion, the best answer would be A and B i.e. Nash equilibrium strategy does not assume best reply responses AND dominant strategy assumes best reply responses
I hope the above helps...
Regards
Financial Advisor
Technical Analyst in Financial Markets -- Experience of more than 10 years in consulting