Question: What happens to duplicate primary notification events when `<reporting>` is set to `1` in the `+CPNER` command for a User Equipment (UE)?
Option 1: The UE will store all duplicates for future reference, regardless of the time elapsed.
Option 2: Duplicate notifications are discarded by the UE, with stored messages cleared after three hours of inactivity.
Option 3: The UE will forward all duplicate notifications to the network for further processing.
Option 4: Setting `<reporting>` to `1` has no effect on handling duplicate primary notification events.
Explanation: When `<reporting>` is set to `1`, the UE enables reporting of primary notification events without security information. The UE discards any duplicate primary notifications based on matching identifiers and clears stored messages after three hours without receiving a new message, ensuring the UE remains up-to-date while minimizing unnecessary data retention.