10. A game has two players. Each player has two possible strategies. One is "cooperate" ( C ), the other is"betray" ( B ). Each player writes on a piece of paper either a C or ( B ) If both players write C, they bothget a payoff of $1000. If both write B, they both get a payoff of zero. If one player writes C and theother writes B, the cooperating player gets a payoff of X and the betraying player gets a payoff of Y.To betray will be a dominant strategy for both player if
(A) Y＞ 1000＞X
(B)Y＞X
(C) Y＞Oand X<0
(D) Y = 1000 and X <0
(E) Y> 1000 and X <0