单项选择题

A.TheirimmediaterequirementistohaveasinglePower770,andtheywillbuyasecondPower770atalaterstage.TheywanttokeeptheirexistingthreePOWER5570sandthreePOWER6520swhichareallmanagedbyanHMC(7310-CR3).Whichofthesestatementsistrueandwouldminimizethecost?()
A.AllthemachinescanbeconnectedtotheexistingHMC,aslongasitisupdatedtocodelevel7.7.1orlater
B.ThePower770requiresanHMC(7042-CR5orlater),sotheymustbuyone.AllofthesystemscanbemanagedbythisnewHMC
C.TheyshouldbuyanewHMCforthePower770system,andleavethePOWER5andPOWER6based
D.ThePower770requiresanHMC,sotheyshouldconnectthePower770totheHMCandconvertthePOWER5andPOWER6basedserverstoIVM