Refer to the exhibit. After the configuration is applied, the two routers fail to establish an OSPF neighbor relationship. What is the reason for the problem?

Refer to the exhibit. After the configuration is applied, the two routers fail to establish an OSPF neighbor relationship. What is the reason for the problem?

A. The OSPF process IDs are mismatched B. The network statement on Router1 is misconfigured C. Router2 is using the default hello timer D. The OSPF router IDs are mismatched