which configuration setting must be added to the routers to allow the second adjacency to form?

Refer to the Exhibit.

You are creating an OSPF multiarea adjacency with a link between two ABRs.

Referring to the exhibit, which configuration setting must be added to the routers to allow the
second adjacency to form?

A.
You must add the second area under [edit protocols ospf] and add a policy statement exporting
the respective router-id into OSPF.

B.
You must add the second area under [edit protocols ospf] and add a static route with the
destination of the other ABR’s router-id in the area.

C.
You must add the second area under [edit protocols ospf] and configure the respective
interface as secondary in the area.

D.
You must add the second area under [edit protocols ospf] and add the respective interfaces

Explanation: