You have just configured on an OSPF adjacency between two routers. After you commit the
configuration, you notice that your adjacency is not up. Referring to the exhibit, what would cause
the problem?

A.
You must configure lo on R2.

B.
You must configure hello and dead intervals on R1.

C.
You must configure an interface-type on R2.

D.
You must configure bfd on R2.