Which statements are true regarding the creation of an incident package file by using the EM Workbench Support？（）

A、AYoucanaddorremovethetracefilestothepackage.
B、BYoucancreatetheincrementalincidentpackageZIPfilefornewormodifieddiagnosticinformationfortheincidentpackagealreadycreated.
C、CYoucanaddSQLtestcasestotheincidentpackage.
D、DYoucannotcreateanincrementalincidentpackagewhenthephysicalfilesarepurgedromtheADR.