About cloud hard disk backup, what is the correct statement?

About cloud hard disk backup, what is the correct statement?
A . There is no quota limit for cloud disk backup
B . After the cloud disk is backed up, expand the capacity again, you can use the previous backup to restore the data, and the cloud hard disk space size will not change after recovery.
C . After the cloud disk is backed up, expand the capacity again, you cannot use the previous backup to restore the data because the size of the cloud hard disk space will become the size before the expansion after recovery.
D . After the expansion of the cloud disk, backup again. Use this backup to restore data. After the recovery, the size of the cloud disk space will not change.

Answer: D