为自己加油

Choose three.
Which are three of the steps taken by Database Configuration Assistant (DBCA)
To clone a remote pluggable database (PDB.starting from Oracle 19c?

A.automatically dropping the database link to the remote database if it
Already exists
B.opening the cloned PDB
C.creating a new empty PDB in the local database from PDB$SEED
D.creating a database link from CDB$ROOT in the local database to CDB$ROOT in
The remote system that is to be cloned
E.creating a database link from CDB$ROOT in the remote database to be cloned
To CDB$ROOT in the local database
F.creating a database link from CDB$ROOT in the local database to the PDB in
The remote system that is to be cloned
G) creating a database link from CDB$ROOT in the remote database to the PDB in
The local database