How is LUN visibility and ownership characterized in an ALUA-aware environment?

A.
LUNs are visible through both SPs; LUN is owned by one SP.

B.
LUNs are visible through both SPs; LUN is owned by both SPs.

C.
LUNs are visible through and owned by only one SP.

D.
LUNs are visible through one SP and owned by both SPs.