Which two statements are true regarding Oracle Data Pump（）

A、EXPDP and IMPDP are the client components of Oracle Data Pump.

B、DBMS_DATAPUMP PL/SQL packages can be used independently of the Data Pump clients.

C、Oracle Data Pump export and import operations can be performed only by users with the SYSDBA privilege.

D、Oracle Data Pump imports can be done from the export files generated in the export utility of previous versions.

E、EXPDP and IMPDP use the procedures provided by DBMS_METADATA to execute export and import commands.