Which storage system command would display the WWPNs of hosts that have logged into storage system
using a Fibre Channel connection?

A.
fcp config

B.
fcp initiator show

C.
fcp show -i

D.
fcp show initiator

Explanation:
https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_fcp.1.html
fcp show initiator [ -v ] [ adapter ]
If no adapter name is given, information about all initiators connected to all adapters are shown.
The command displays the portname of initiators that are currently logged in with the Fibre Channel target
adapters. If the portname is in an initiator group setup through the igroup command, then the group name is
also displayed. Similarly, all aliases set with the fcp wwpn-alias command for the portname are displayed as
well.
If the -v flag is given, the command displays the Fibre Channel host address and the nodename/portname of
the initiators as well.