A customer is successfully running full backups of their Oracle database nightly. They have
decided that they need to start backing up the database at Level 1 during the week. They change
the dataset to start performing Level 1 backups; however, the next backup ran as long as a full
backup. What would have caused this to happen?

A.
A Level 0 backup had to be performed prior to a Level 1 backup being run.

B.
The database is not configured to allow Block Change Tracking.

C.
The amount of data changed in the database is too large for a Level 1 backup to be performed.

D.
Oracle does not support Level 1 backups after a full backup.