Question: What information does a NB-IoT UE, supporting DL channel quality reporting and receiving `cqi-Reporting` in `SystemInformationBlockType2-NB`, include in the `cqi-NPDCCH` field of the `RRCEarlyDataRequest` message?
Option 1: Latest uplink channel quality measurements from all carriers.
Option 2: Average downlink channel quality measurements from neighboring cells.
Option 3: Latest downlink channel quality measurements of the carrier where the random access response is received.
Option 4: Historical downlink channel quality measurements for all supported frequencies.
Explanation: This is because, as specified, if a UE is an NB-IoT UE and supports DL channel quality reporting with `cqi-Reporting` present in `SystemInformationBlockType2-NB`, it sets the `cqi-NPDCCH` to include the latest results of the downlink channel quality measurements specifically for the carrier where the random access response is received, aligning with efficient resource allocation and optimization for the ongoing connection.