What must each LUN have configured to allow access?

A storage administrator has created LUNs for FC access.

What must each LUN have configured to allow access?
A . LUN OS type set host OS, igroup with WWPNs from host HBAs, LUN mapped to an igroup
B . LUN OS type set host OS, igroup with all IQNs from host HBAs, igroup mapped to each FC port using port sets
C . Igroup with WWPNs from host HBAs, ALUA set on host using host utility kit, LUN OS type set to default values
D . LUN OS type set to default values, ALUA set on host using DSM, igroup with WWPNs from host HBAs

Answer: A