Youhavecreatedabaselinemetric，DISK_IO_BL，forthediskI/OmetricsinyourPRODdatabaseandyouhavebeengettingnotificationswheneverthedatabaseperformancedegrades.YouoptimizethedatabaseI/Otogaintheperformanceandyoudecidetoremovethebaselinemetrics.WhichmethodwouldyouusetoremovetheDISK_IO_BLbaselinemetrics？（）

A.Thebaseline，oncecreated，cannotberemoved.

B.DisablethebaselinemetricsintheDatabaseControlManageMetricspage.

C.Thebaselinewillbeautomaticallyremovedoncethedatabaseperformancehasbeenoptimized.

D.DropthebaselinemetricsbyusingDBMS_WORKLOAD_REPOSITORY.DROP_BASELINEprocedure.