单项选择题

A.2andSysback.TherearenoplanstorunLPARsorMicro-Partitionsonthep5-520inthenearfuture.ThecustomerhasaskedthepSeriestechnicalspecialisttorecommendanythingelsethatmaybeneeded.Whichofthefollowingshouldberecommendedinthissituation?()
A.HMC
B.DVD-ROM
C.Tapedrive
D.Networkswitch