The OceanStor 18500 Uses the RAID 2

The OceanStor 18500 uses the RAID 2.0 virtualization architecture. When planning to configure storage, which of the following is erroneous?

A) A storage pool can create two types of LUNs, Thick LUN and Thin LUN
B) When creating a storage pool, the minimum number of SAS disks in the hard disk domain where the storage pool is located is 9 disks when the performance layer RAID policy is selected as 8D + 1P
C) In the RAID 2.0 virtualization architecture, the hot spare space in the storage pool is distributed on each member disk in the storage pool
D) RAID 2.0 virtualization architecture, the storage pool can contain three storage tiers, and each tier can be configured with a number of different RAID strategies