单选题Which of the following would a company implement to help reduce the cost of electricity？（）AShutdown/power policiesBRedundant power suppliesCUse optical miceDSocial engineering policy
单选题
Which of the following would a company implement to help reduce the cost of electricity？（）
A
Shutdown/power policies
B
Redundant power supplies
C
Use optical mice
D
Social engineering policy
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