【单选题】Your multitenant container database, CDB1, is running in ARCHIVELOG mode and has two pluggable databases, HR_PDB and ACCOUNTS_PDB. An RMAN backup exists for the database. You issue the command to open...
A.
Place CDB1 in the mount stage and then the USERDATA tablespace offline in ACCOUNTS_PDb.
B.
Place CDB1 in the mount stage and issue the ALTER PLUGGABLE DATABASE accounts_pdb CLOSE IMMEDIATE command.
C.
Issue the ALTER PLUGGABLE DATABASE accounts_pdb RESTRICTED command.
D.
Take the USERDATA tablespace offline in ACCOUNTS_PDb.