You are managing an Oracle Database 11g instance.You want to create a duplicate database for testing purpose. What are the prerequisites for performing the active database duplication?（）

• A、The source database backup must be copied over the net for test database.
• B、The source database must be run in ARCHIVELOG mode if the database is open.
• C、The source database must be shut down cleanly if the database is in mounted state.
• D、A net service name should be set up and a listener configured with the target as well as the source database.