单选题When upgrading the BIOS， which of the following is MOST important？（）ACheck room temperature and humidity.BFollow manufacturer instructions and documentation.CRun operating system updates.DDefragment all the hard drives on the system.
单选题
When upgrading the BIOS， which of the following is MOST important？（）
A
Check room temperature and humidity.
B
Follow manufacturer instructions and documentation.
C
Run operating system updates.
D
Defragment all the hard drives on the system.
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