What would be the correct step to resolve the problem?

You are troubleshooting an OSPF adjacency that is stuck in the ExStart state. What would
be the correct step to resolve the problem?

A.
Determine whether the hello and dead intervals are the same on both sides.

B.
Review the MTU settings to ensure that they match.

C.
Determine whether the neighbor is a DR-Other.

D.
Look for a mismatched IP subnet or mask.