Oracle9i provides a database package called dbms_redefinition to perform an online rebuild of a table.  Which two steps are you recommended to do prior to issuing thedbms_redefinition_start_redef table procedure call？（）

• A、Grand privileges on the interim table.
• B、Invoke the dbms_redefinition.can_redef_table procedure.
• C、Invoke the dbms_redefinition.sync_interim_table procedure.
• D、Create any triggers， indexes， or constraints on the interim table.
• E、Create an empty interim table with all the desired characteristics.