After Checking the OSPF Neighbor State, the Administrator Discovers That

After checking the OSPF neighbor state, the administrator discovers that the router has established a TWOWAY state with the peering router. What can be understood from this information? (Choose two)

A) The routers are configured using the same process ID
B) The routers are configured using the same area ID
C) The routers are configured using wrong router ID
D) The routers are considered DROthers in a broadcast network