应急预案培训的内容应包括：培训计划、方式和要求，使有关人员了解相关应急预案内容，熟悉应急职责、应急程序和（）。

A、现场处置方案

B、可能发生事故的经济损失

C、相关人员的惩处标准

Diana bought a stereo for $530, which was the retail price plus a 6 percent sales tax. How much money could she have saved if she had bought the stereo at the same retail price in a neighboring state where she would have paid a sales tax of 5 percent ？（）

A．$1.00

B．$2.65

C．$4.30

D．$5.00

E．$5.30