YouadministeraSQLServer2008instance.Theinstanceislocatedonafour-processor,quad-coreserver.TheserverfrequentlyexperiencesCPUpressure.Theinstancecontainsaverylargemission-criticaldatabasethatisusedcontinuously.YouneedtoensurethatonlineindexrebuildsdonotconsumeallavailableCPUcycles.Whichconfigurationoptionshouldyouuse?（）

A.affinitymask

B.affinityI/Omask

C.maxdegreeofparallelism

D.optimizeforadhocworkloads