Thestatisticsforapoorlyperforming，dual-processorx365systemareasfollows（1）Processor80%for5-secondincrements（2）Memorypagefaults360\/secondaverageover15minutes（3）Disk%disktime100%Whichofthefollowingwillprovidethegreatestperformanceimprovement？（）
A.Addmemory
B.Addaprocessor
C.Exchangetheexistingprocessorforafasterprocessor
D.Addafasterdisksubsystem
参考答案：A
