Which three statements are true about external tables in Oracle 18c and later releases? (Choose three.)

A. They cannot be partitioned

B. The ORACLE_DATAPUMP access driver can be used to unload data from a database into an external table

C. The ORACLE_DATAPUMP access driver can be used to load data into a database from an external table

D. The ORACLE_LOADER access driver can be used to unload data from a database into an external table

E. They support UPDATEs but not INSERTs and DELETEs

F. External table files can be used for other external tables in a different database