Which configuration actions can be performed by using the DSCLI on IBM System StorageDS6000 and DS8000 servers?（）

A、A.Assign RAID ranks to extent pools and combine storage extent pools

B、B.Assign RAID ranks to extent pools and create and assign volumes to hosts

C、C.Combine storage extent pools and invoke a server failover/fallback

D、D.Invoke a server failover/fallback and create and assign volumes to hosts