Which condition must be met by the OSPF peer of router R1 before the two devices can establish communication?

Refer to the exhibit:

Which condition must be met by the OSPF peer of router R1 before the two devices can establish communication?
A . The interface on the OSPF peer must use the same key ID and key value as the configured interface
B . The interface on the OSPF peer may have a different key ID, but it must use the same key value as the configured interface
C . The OSPF peer must be configured as an OSPF stub router
D . The OSPF peer must use clear-text authentication

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Answer: A