What is a prerequisite for a Hot Push with Open Replicator?

A.
Each FA port on the Control array (with mapped Control devices) must be able to access the corresponding Remote devices.

B.
Each FA port on the Remote array (with mapped Remote devices) must be able to access the corresponding Control devices.

C.
One FA port on the Control array (with mapped Control devices) must be able to access the corresponding Remote devices.

D.
One FA port on the Remote array (with mapped Remote devices) must be able to access the corresponding Control devices.