Which of the Following Statements Regarding the Alarm Is Fault

Multiple Choice

Which of the following statements regarding the alarm is fault "OSPF/2/IFAUTFAIL(OID) [1.3.6.1.2.1.14.16.2.6]: A packet is received on a non-virtual interface from a router whose authentication key or authentication type conflicts with the local authentication key or authentication type. (IfipAddress=[ip-address], AddressLessIf=[interface-index], ProcessId=[process-Id], RouterId=[router-id], PacketSrc=[source-ip-address], ConfigErrorType=[error-type], PacketType=[packet-type], InstanceName=[instance-name]) "?

A) Incorrect interface authentication configuration
B) Inconsistent Hello intervals
C) Unmatched subnet masks
D) Inconsistent area IDs