Which three OSPF pieces of information must between routers in order to establish an ospf neighborship? (Choose three)

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Which three OSPF pieces of information must between routers in order to establish an ospf neighborship? (Choose three)
A . Area ID
B . Hello interval and dead interval timer value
C . LSA refresh period timer value
D . Priority value
E . Stub flag
F . Process ID

Answer: A, B, E