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 copies all the blocks changed since the most
recent level 0 backup

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

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