ViewtheExhibittoexaminetheoutputoftheDBA_OUTSTANDING_ALERTSview.After30minutes,youexecutedthefollowingcommand:SQL>SELECTreason,metric_valueFROMdba_outstanding_alerts;REASONMETRIC_VALUE----------------------------------------------------Tablespace[TEST]is[28perce28.125nt]fullWhatcouldbethereasonfortheeliminationoftheotherrowsintheoutput（）

A.AnAutomaticWorkloadRepositorysnapshothasbeentakenrecently.

B.Thenon-threshold-basedalertsaretransferredtoDBA_ALERT_HISTORY.

C.ThethresholdalertsconditionsareclearedandthealertsaretransferredtoDBA_ALERT_HISTORY.

D.ThethresholdalertsrelatedtodatabasemetricsarepermanentlystoredinDBA_ALERT_HISTORYbutnotthethresholdalertsrelatedtoinstancemetrics