A subgame-perfect equilibrium is:
A) An equilibrium to a multistage game.
B) A Nash equilibrium.
C) A equilibrium strategy profile in which no player can improve upon his or her payoff by switching strategies at any stage of a multistage game.
D) All of the above.
E) None of the above.

Question

Quizplus · Accepted Answer

A subgame-perfect equilibrium is indeed an equilibrium to a multistage game, a Nash equilibrium, and a strategy profile where no player can improve their payoff by changing strategies at any stage of a multistage game.

A Subgame-Perfect Equilibrium Is