According to NetApp, what is the recommended system storage configuration shown here?

According to NetApp, what is the recommended system storage configuration shown here?

NetApp Release 8.3: Tue Sep 30 01:41:49 PDT 2014

System ID: 1231231231 (node_A_1): partner ID: 4564564564 (node_A_2)

System Serial Number 700000123123 (node_A_1): partner Serial Number 700000456456 (node_A_2)

System Rev: BO

System Storage Configuration: ________(Disk connection)

System ACP Connectivity: NA
A . single path HA
B . multipath HA
C . dual path
D . mixed path HA