What are two reasons for this problem?

You are troubleshooting a problem where an OSPF adjacency between two neighboring routers
will not form.

What are two reasons for this problem? (Choose two.)

A.
One or both of the connected interfaces are missing the family inet statement.

B.
One or both of the connected interfaces are missing the family iso statement.

C.
The connected interfaces are not on the same subnet.

D.
Another IGP is running on one or both of the routers, overriding OSPF.

Explanation: