What is the reason that an outgoing call succeeds when there is no COR list that is applied to the incomingdial peer and a COR list is applied to the outgoing dial peer?

What is the reason that an outgoing call succeeds when there is no COR list that is applied to the incomingdial peer and a COR list is applied to the outgoing dial peer?
A. The COR list for incoming calls on the incoming dial peer is a superset of COR lists for outgoing calls onthe outgoing dial peer.
B. COR lists for incoming calls on the incoming dial peer are not a superset of COR lists for outgoing callson the outgoing dial peer.
C. The outgoing dial peer, by default, has the lowest priority.
D. The incoming dial peer, by default, has the highest COR priority when no COR is applied.