When an incident in FortiAnalyzer is identified as a false positive and its status is updated to
"Closed:
False Positive," certain records and logs are updated to reflect this change.
Option A - The Audit History Log Will Be Updated:
FortiAnalyzer maintains an audit history log that records changes to incidents, including updates to their status. When an incident status is marked as "Closed: False Positive," this action is logged in the audit history to ensure traceability of changes. This log provides accountability and a record of how incidents have been handled over time.

In FortiOS and FortiAnalyzer logging systems, when an event has a status of "Mitigated" in the Event Status column, it typically indicates that the system took action to address the identified threat. In this case, the Web Filter blocked the web request to a suspicious destination, and the event status "Mitigated" confirms that the action was successfully implemented to neutralize or block the security risk.

Playbook logs, which relate to automated incident response actions, can be viewed centrally in the root ADOM, allowing visibility across all ADOMs.
Event logs on FortiAnalyzer typically provide system-wide information applicable to the entire FortiAnalyzer unit, while application logs are specific to each ADOM, reflecting the logs related to devices and activities managed within that ADOM.
https://docs.fortinet.com/document/fortianalyzer/7.6.3/administration-guide/208717/enabling-and- disabling-the-adom-feature