In Huawei Cloud Stack, which of the following understandings about Huawei Cloud resource expansion is wrong?

In Huawei Cloud Stack, which of the following understandings about Huawei Cloud resource expansion is wrong?
A . When adding new nodes, if the number of nodes exceeds the upper limit of the current management scale, you need to expand the management scale first, and then add new nodes.
B . When creating a new AZ, you can choose to deploy the management plane and business plane of the new AZ together or separately.
C . When creating a new AZ, if the new AZ shares Huawei’s distributed block storage pool with the original AZ, the storage backend thin allocation ratio of the new AZ must be consistent with the original AZ configuration.
D . When creating a new AZ, all nodes in the new AZ must have the same hardware architecture and virtualization type.

Answer: B