When creating a ZFS file system, which of the following scenarios are not recommended?

A.
Drives should not be partitioned with both UFS and ZFS file systems.

B.
A disk that is used as a swap or dump device should not be used for a ZFS file system.

C.
Constructing ZFs file system on top of LUNs that are created from hardware RAID arrays.

D.
Constructing ZFS file systems on top of software based volume managers such as SVM meta devices.