Question: Under what condition(s) should a UE (User Equipment) inform its upper layers about the possible failure to deliver `ULInformationTransfer` messages, excluding cases where the messages include `dedicatedInfoF1c` without any `dedicatedInfoType`?
Option 1: When AS (Access Stratum) security is not started and either a radio link failure occurs for NB-IoT UEs or mobility procedures (handover, RRC connection re-establishment) occur before delivery confirmation.
Option 2: Only when there's a radio link failure in any UE type before the successful delivery of `ULInformationTransfer` messages is confirmed, regardless of AS security status.
Option 3: Whenever mobility (handover, RRC connection re-establishment) occurs for non-NB-IoT UEs without considering the AS security status or delivery confirmation.
Option 4: If dedicatedInfoType is included in `ULInformationTransfer` messages for all UE types, regardless of other conditions.
Explanation: This option correctly identifies the conditions under which a UE should inform its upper layers about possible delivery failure of `ULInformationTransfer` messages. These conditions are specifically tailored for NB-IoT UEs when AS security is not initiated and a radio link failure happens, or more broadly for any UE undergoing mobility procedures before confirmation of successful message delivery, with the specified exclusion.