(Bertrand’s duopoly game with constant unit cost) Consider the extent to which the analysis…

(Bertrand’s duopoly game with constant unit cost) Consider the extent to which the analysis depends upon the demand function D taking the specific form D(p) = α − p. Suppose that D is any function for which D(p) ≥ 0 for all p and there exists p > c such that D(p) > 0 for all p ≤ p. Is (c, c) still a Nash equilibrium? Is it still the only Nash equilibrium?