In the OceanStor V3 storage system, the following description about SmartCache, which is wrong?

In the OceanStor V3 storage system, the following description about SmartCache, which is wrong?
A . When expanding or shrinking the SmartCache pool, you must first stop the service.
B . Resources are not affected by multiple SmartCache partitions.
C . LUNs and file systems can share a SmartCache partition resource.
D . The intelligent buffer pool manages all the SSD disks of the controller to ensure that the resources of each smart cache partition come from different SSD disks, thereby avoiding unbalanced load of different SSD disks.

Answer: A