When designing SRDF/A, what is the recommended configuration for the DSE pool?

When designing SRDF/A, what is the recommended configuration for the DSE pool?

A.
RAID-5 devices spread out over few disks

B.
RAID-1 devices on dedicated disks

C.
RAID-6 devices on dedicated disks

D.
RAID-1 devices spread out over many disks