The statistics for a poorly performing x366 system are as follows:
(1)Processor: 90% for 5 second increments
(2)Memory page faults: 20/second average over 15 minutes
(3)Disk: disk time 1%
Which of the following will provide the greatest performance improvement?()
A.Add memory
B.Add a processor
C.Add a faster disk subsystem
D.Exchange the processor with a faster processor