A Strategy Profile in a Noncooperative, Static Game Is a Nash

A strategy profile in a noncooperative, static game is a Nash equilibrium when:

A) Each player has only dominated strategies.
B) The payoffs from alternative strategy profiles is probabilistic.
C) Each player's strategy is the best response to the strategy adopted by rivals.
D) Either player has a dominant strategy.
E) Answers c and d are correct.