Your multitenant container database (CDB) cdb1 that is running in archivelog mode contains two pluggable databases (PDBs), pdb2_1 and pdb2_2, both of which
are open. RMAN is connected to the target database pdb2_1.
RMAN> BACKUP DATABASE PLUS ARCHIVELOG DELETE INPUT;
Which statement is true about the execution of this command to back up the database?
A. All data files belonging to pdb2_1 are backed up and all archive log files are deleted.
B. All data files belonging to pdb2_1 are backed up along with the archive log files.
C. Only the data files belonging to pdb2_ are backed up.
D. This command gives an error because archive log files can be backed up only when RMAN is connected to the root database.