Refer to the exhibit. Which configuration issue is preventing the OSPF neighbor relationship from being established between the two routers?

Refer to the exhibit. Which configuration issue is preventing the OSPF neighbor relationship from being established between the two routers?

A. R1 has an incorrect network command for interface Gi1/0. B. R2 should have its network command in area 1. C. R1 interface Gi1/0 has a larger MTU size. D. R2 is using the passive-interface default command.