#pareto-optimality

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mediumAI-checkedMulti-Agent Systems

A prisoner's dilemma: each player chooses C (cooperate) or D (defect), and each cell lists (Row's payoff, Column's payoff).

	C	D
C	3, 3	0, 5
D	5, 0	1, 1

Which statements are true? Select all that apply.

(C, C) is an equilibrium, because it has the largest total payoff1
D strictly dominates C for both players2
(C, D) is Pareto optimal, although it is unfair to Row3
(D, D) is the only pure-strategy Nash equilibrium4
(D, D) is Pareto optimal, because it is an equilibrium5

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