AsystemadministratorhasjustfinishedupgradingasystemtoAIX5.2.Iftherearefutureproblems，thesystemadministratorwouldliketoaddanentrytotheAIXerrorlogtorecordthisevent.Whichofthefollowingcommandscanbeissuedforthispurpose？（）A./usr/bin/errmsg"SystemupgradedtoAIX5

AsystemadministratorhasjustfinishedupgradingasystemtoAIX5.2.Iftherearefutureproblems，thesystemadministratorwouldliketoaddanentrytotheAIXerrorlogtorecordthisevent.Whichofthefollowingcommandscanbeissuedforthispurpose？（）

A./usr/bin/errmsg"SystemupgradedtoAIX5.2"

B./usr/bin/errlog"SystemupgradedtoAIX5.2"

C./usr/bin/errupdate"SystemupgradedtoAIX5.2"

D./usr/bin/errlogger"SystemupgradedtoAIX5.2"