AserverhastwoPCI－XbuseswithfourActive&ensp

AserverhastwoPCI-XbuseswithfourActivePCI-Xslots.Slots1and2areonthefirstPCI-Xbus（100MHz）andslots3and4areonthesecondPCI-Xbus（133MHz）.ThecustomerrequiresyoutoinstalladapterAandadapterBondayone.Aftertheserverhasbeeninstalledandconfigured，theservermustberunning24by7withnodowntime.Threemonthslater，adapterCneedstobehotadded.Alltheadaptersare64-bitandcapableofspeedsupto133MHz.Thecustomer’spriorityistohavenodowntime，andperformanceissecondary.

Basedontheinformationprovided，intowhichslotsshouldadaptersAandBbeinstalledinandlaterintowhichslotwouldadapterCbehot-added？（）