Company.comhasencounteredaproblemontheHMC，whichrequiresaccesstotherootshellontheHMC.WhichofthefollowingisnecessarytoaccesstherootuseridontheHMC？（）

A．EnableremotecommandsontheHMCConfigurationmenu,thenusesshtologintotheHMC,entersu-root B．LogintotheHMCashscpeandrunpesh,usingatemporarypasswordfromIBMSupport,afterward，entersu-root C．LogintotheHMCashscroot,thenrunpesh,usingatemporarypasswordfromIBMSupport, afterward,entersu-root D．EnableremotecommandsontheHMCConfigurationmenu，thentelnetinashscroot,entersu-root