Refer to the exhibit. When running OSPF, What would cause router A not to form an adjacency with router B?

IT Questions Bank › Refer to the exhibit. When running OSPF, What would cause router A not to form an adjacency with router B?

Question:
Refer to the exhibit. When running OSPF, What would cause router A not to form an adjacency with router B?

The loopback addresses are on different subnets.
The value of the dead timers on the router are different.
Route summarization is enabled on both routers.
The process indentifier on router A is different than the process identifier on router B.

Explanation: To form an adjacency (become neighbor), router A & B must have the same Hello interval, Dead interval and AREA number.