Question: Under what condition is a notification generated by the Management and Network Services (MnS) producer regarding an existing AlarmInformation?
Option 1: When the perceivedSeverity of an existing AlarmInformation changes to or from any severity level, including 'CLEARED'
Option 2: When a new AlarmInformation is created with a perceivedSeverity of 'WARNING' or higher
Option 3: When the perceivedSeverity of an existing AlarmInformation changes (except to the value 'CLEARED')
Option 4: Only when all alarms in the system are cleared, resulting in an empty alarm list
Explanation: A notification is generated by the MnS producer when there's a change in the perceived severity of an existing alarm, but specifically excludes changes to the 'CLEARED' state. This highlights the importance of monitoring and managing alarm severities in telecom networks, ensuring timely responses to escalating or de-escalating issues without generating unnecessary notifications upon resolution.