Which two statements are true regarding the backups performed?

You are managing an Oracle Database 11g database with the following backup strategy:
1. On Sunday, an incremental level 0 tape backup is performed
2. Monday through Saturday, a cumulative incremental level 1 tape backup is performed
Which two statements are true regarding the backups performed? (Choose two.)

A.
The backup performed in step 1 backs up all the blocks changed since the most recent level 1 backup

B.
The backup performed in step 2 backs up all blocks that have changed since the most recent incremental backup at level 1

C.
The backup performed in step 2 copies all the blocks changed since the most recent level 0 backup

D.
The backup performed in step 1 backs up all blocks that have ever been in use in the database