Question: What information is included in the UE CONTEXT SETUP REQUEST message during inter-gNB-DU mobility using SCG SRB (SRB3) in EN-DC operation?
Option 1: UE Capability Information
Option 2: Security Context Information
Option 3: Mobility History Information
Option 4: CG-ConfigInfo
Explanation: During inter-gNB-DU mobility using SCG SRB (SRB3) in EN-DC operation, the UE CONTEXT SETUP REQUEST message includes a CG-ConfigInfo to facilitate the setup of the new UE context at the target gNB-DU. This information is essential for the successful handover and maintenance of the UE's connection.