单项选择题AstoragespecialistispresentingDS5300andmentionsthatthemaximumavailablecacheis64GB.Thecustomerasksifthatcacheisbackeduptoharddrivesintheeventofapoweroutage.Fromthefollowinglist,whichcompetitorismostlikelyalsotalkingtothiscustomer?()
A. EMC
B. HDS
C. SUN
D. NetApp