Your multitenant container database (CDB) is running in ARCHIVELOG mode. You connect to the CDB RMAN. Examine the following command and its output: You execute the following command: RMAN > BACKUP DATABASE PLUS ARCHIVELOG; Which data files will be backed up?（）

• A、Data files that belong to only the root container
• B、Data files that belong to the root container and all the pluggable databases (PDBs)
• C、Data files that belong to only the root container and PDB$SEED
• D、Data files that belong to the root container and all the PDBs excluding PDB$SEED