多选题Which of the following would be the BEST safety measure to take before installing a Windows service pack？（）ABack up all important documents.BSet a System Restore point.CNote the BIOS settings in case a reset is needed.DBack up the drivers for the computer in case re-installation is needed.EUninstall the previous service pack.
多选题
Which of the following would be the BEST safety measure to take before installing a Windows service pack？（）
A
Back up all important documents.
B
Set a System Restore point.
C
Note the BIOS settings in case a reset is needed.
D
Back up the drivers for the computer in case re-installation is needed.
E
Uninstall the previous service pack.
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