Refer to the exhibit. Routers A and B are directly connected and running OSPF, but they are unable to form a neighbor relationship. What is the most likely cause?

A.
The routers are not on the same network.

B.
The network statements do not match.

C.
The process number does not match.

D.
The MTU does not match.

E.
The OSPF cost does not match.

F.
There is a physical issue with the cable.