Which two commands in this scenario are correct?

You are using disk-based backups and the disk space in the backup destination is limited. A normal complete backupset will not fit onto the disk. You need to perform a full database backup in the same disk.
Which two commands in this scenario are correct? (Choose two.)

A.
RMAN> BACKUP DATABASE;

B.
RMAN> BACKUP AS BACKUPSET DATABASE;

C.
RMAN> BACKUP AS COMPRESSED BACKUPSET DATABASE;

D.
RMAN> BACKUP DURATION 2:00 PARTIAL MINIMIZE TIME DATABASE;

E.
RMAN> BACKUP DURATION 1:00 PARTIAL FILESPRESET 1 DATABASE;

F.
RMAN> BACKUP AS COMPRESSED BACKUPSET DATABASE PLUS
ARCHIVLOG;

Explanation:
For any use of the BACKUP command that creates backupsets, you can take advantage of RMAN’s support for binary compression of backupsets, by using the AS COMPRESSED BACKUPSET option to the BACKUP command. The resulting backupsets are compressed using an algorithm optimized for efficient compression of Oracle database files. No extra uncompression steps are required during recovery if you use RMAN’s integrated compression.
REF.: Oracle(r) 10g Backup and Recovery Basics, 4-6