Question: For a User Equipment (UE) supporting Narrowband Internet of Things (NB-IoT), what is a condition for storing and reporting Radio Link Failure (RLF) Reports in a UEInformationResponse message when connected to the Evolved Packet Core (EPC)?
Option 1: The UE must support at least UE Category M.
Option 2: The UE's RRC state must be set to "Connected" mode specifically for LTE-M.
Option 3: The UE supports any ue-Category-NB (NB-IoT category).
Option 4: The EPC must have a dedicated IoT core network setup.
Explanation: This is correct because, as per the specifications, storing and reporting RLF Reports in a UEInformationResponse message for NB-IoT UEs is contingent upon the UE supporting any of the ue-Category-NB categories. This directly ties the feature's applicability to the UE's support for NB-IoT-specific categories, ensuring the device can handle the unique requirements of NB-IoT communications efficiently.