Question: When a UE (User Equipment) detects an NR (New Radio) sidelink frequency that fulfills the entry condition for an event-triggered report, and this frequency is not already included in the `sl-FrequencyTriggeredList`, what actions will the UE take for the corresponding `sl-MeasId`?
Option 1: Only update `sl-NumberOfReportsSent` to 0 and initiate the measurement reporting procedure.
Option 2: Include a new measurement reporting entry, set `sl-NumberOfReportsSent` to 0, add the frequency to `sl-FrequencyTriggeredList`, but do not initiate the reporting procedure immediately.
Option 3: Remove any existing measurement reporting entry for this `sl-MeasId` and stop the periodical reporting timer before taking any new actions.
Option 4: Include a new NR sidelink measurement reporting entry, set `sl-NumberOfReportsSent` to 0, include the concerned NR sidelink frequency in `sl-FrequencyTriggeredList`, and initiate the NR sidelink measurement reporting procedure.
Explanation: According to the specifications for event-triggered reporting when a new NR sidelink frequency meets the entry condition and is not already listed, the UE must create a new reporting entry for that `sl-MeasId`, reset the report counter (`sl-NumberOfReportsSent`) to 0, add the frequency to the triggered list (`sl-FrequencyTriggeredList`), and then initiate the reporting procedure. This ensures timely reporting of new conditions without overwriting existing data or failing to notify the network of changes.