Which two are true about consistent database backups? (Choose two.)
A. They can only be taken if the database is in ARCHIVELOG mode.
B. They can only be taken by using RMAN command.
C. They can only be taken when a RECOVERY CATALOG is used.
D. They can only be taken by using RMAIN when the database is in MOUNT state.
E. They can only be taken if a NORMAL, TRANSACTIONAL, OR IMMEDIATE shutdown has been performed and the backup is taken before the database is reopened.