How many active zone sets may exist on an MDS-Series switch?

A.
One zone set is permitted for each VSAN, except the isolated VSAN

B.
Only one zone set is permitted for the entire switch

C.
Only three zone sets are permitted: one for the default VSAN, one for the isolated VSAN, and
one for the primary VSAN

D.
Only two zone sets are permitted: one for the default VSAN and one for the primary VSAN