Which switch feature on NK5-A uses NP_Ports to allow for fabric expansion of new FC switches without having to designate additional domain IDs?

You have a switch called NK5-A configured with an NP_Port.

Which switch feature on NK5-A uses NP_Ports to allow for fabric expansion of new FC switches without having to designate additional domain IDs?
A . F-port channel trunking
B . FCIP
C . NPIV
D . NPV

Answer: A