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

• A、Assign RAID ranks to extent pools and combine storage extent pools
• B、Assign RAID ranks to extent pools and create and assign volumes to hosts
• C、Combine storage extent pools and invoke a server failover/fallback
• D、Invoke a server failover/fallback and create and assign volumes to hosts