Whatneedstobedonebeforeyoucanstarttheupgrade?()

A.OntheWindows95computer，replacetheCPUwithafastermodel.

B.OntheWindows95computer，reformatthediskwithFAT32.

C.OntheWindows98computer，reformatthediskwithFAT32.

D.OntheWindows98computer，increasetheamountoffreediskspaceontheharddisk.

E.OntheWindowsNTWorkstation4.0computer，replacetheCPUwithafastermodel.

F.OntheWindowsNTWorkstation4.0computer，increasetheamountoffreediskspaceontheharddisk.