In negotiation, the fixed-pie perception is defined as:
选项：

A:the assumption that attacking the other party is the best way to get most of the pie
B:the assumption that capitulating to the other negotiating party’s demands is the best way to a win-win agreement
C:the belief that concessions are necessary by one or both parties in order to reach an agreement
D:the assumption that sticking to your demands and refusing anything but the majority of the pie is the best way to get most of the pie