Which statement is the technical definition of NPIV?

NPIV is a mode of FL$-$Port operation that allows the assignment of multiple FCIDs to a single N Port when FLOGIs are received on the same F Port.

NPIV is a mode of N Port operation that allows the assignment of multiple FCIDs to a single F Port when FLOGIs are received on the same F Port.

NPIV is a mode of F Port operation that allows the assignment of multiple FCIDs to a single N Port when FLOGIs are received on the same F Port.

NPIV is a mode of ISL$-$Port operation that allows the assignment of multiple FCIDs to a single F Port when FLOGIs are received on the same F Port.