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

• A、 You can add or remove the trace files to the package.
• B、 You can create the incremental incident package ZIP file for new or modified diagnostic information for the incident package already created.
• C、 You can add SQL test cases to the incident package.
• D、 You cannot create an incremental incident package when the physical files are purged rom the ADR.