When distributive bargaining strategies are useful? ( )
选项：

A:when a negotiator wants to maximize the value obtained in a single deal
B:when the relationship with the other party is not important
C:when negotiators show little interest or concern in whether they attain their own outcomes, but are quite interested in whether the other party attains his or her outcomes
D:when negotiators show high concern for attaining their own outcomes and high concern for whether the other attains his or her outcomes