When should you collect the system time from BIOS?

A$.$ Collect the system time first from the OS$,$ then compare it to the BIOS time

B$.$ Only after all storage media $($HDDs$,$ floppy disks, flash drives, optical media$)$ has been removed

C$.$ Boot to BIOS as soon as possible to record the information before you remove the HDD$,$ which may change it

D$.$ Use a CLI command using the OS to show the BIOS information