Which two statements are true about the command?

Examine the RMAN commands executed in your database:

RMAN> CONFIGUREDEFAULT DEVICE TYPE TO disk;
RMAN> CONFIGURE DEVICETYPE DISK BACKUP TYPE TO BACKUPSET; RKAN> CONFIGURE CONTROLFILE AUTOBACKUP ON;

You issue the command:

RMAN> BACKUP DATABASE;

Which two statements are true about the command?

A.
It performs a log switch.

B.
It creates compressed backup sets by using binary compression by default.

C.
It backs up only the used blocks in data files.

D.
It backs up data files, the control file, and the server parameter file.

E.
It creates a backup of only the control file whenever the database undergoes a structural change.