Question: For a User Equipment (UE) to support Mobile Originated Early Data Transmission (MO-EDT) for User Plane Cellular Internet of Things (CIoT) 5GS optimizations, which of the following conditions must be met regarding its capabilities?
Option 1: The UE must support only TDD mode and have a ue-Category-M.
Option 2: The UE must either support ce-ModeA-r13 or, for FDD, support any ue-Category-NB.
Option 3: The UE needs to have both ce-ModeA-r13 and ue-Category-M capabilities enabled.
Option 4: There are no specific mode or category requirements for MO-EDT support in CIoT 5GS optimizations.
Explanation: This is correct because, according to the specifications, MO-EDT for User Plane CIoT 5GS optimizations requires either ce-ModeA-r13 support (regardless of duplex mode) or, specifically for Frequency Division Duplexing (FDD), support for any Narrowband (NB) UE category. This ensures the UE can efficiently handle early data transmissions in optimized CIoT scenarios within 5G systems.