Your database is functioning in ARCHIVELOG mode. In which two situations would you perform a cancel-based recovery？ （）

A.  You find that one of the redo log members in each redo log group is lost.

B.  You find that a data file that belongs to the USERS tablespace is damaged.

C.  You find that a data file that belongs to the SYSTEM tablespace is damaged.

D.  You find that the current redo log group is damaged and is not available for recovery.

E.  You realized while performing a recovery that an archived redo log file needed for recovery is lost.