A . HKEY_LOCAL_MACHINEHardwareDescriptionSystem
B . HKEY_LOCAL_MACHINESoftwareMicrosoftDfrgBootOptimizeFunction
C . HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionDateTimeServers
D . HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionDateTimeServers
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