which three situations can you use the backup?

Examine the command to back up the ASM metadata:
ASMCMD>md_backup /backup/ASM_backup
In which three situations can you use the backup?

A.
when one or more disks in an ASM disk group are lost

B.
when the data file on an ASM disk group gets corrupted

C.
when one of the disks in a disk group is accidentally unplugged

D.
when one or more file directory paths are accidentally deleted from an ASM disk group

E.
when all the ASM disk groups for the ASM instance are lost