Question: Which 3GPP Technical Specification document defines the MB2-C reference point, supporting control plane interactions between the UAS Application Server and the Broadcast/Multicast Service Center (BM-SC)?
Option 1: Application layer support for Uncrewed Aerial System (UAS)
Option 2: Group Communication System Enablers for 5G (GCSE_5G)
Option 3: Group Communication System Enablers for LTE (GCSE_LTE); MB2 reference point; Stage 3
Option 4: Management and Orchestration of Network Slices
Explanation: The correct answer is Option 3 because it specifically defines the MB2-C reference point, supporting control plane interactions between the UAS Application Server and the BM-SC, focusing on Group Communication System Enablers for LTE (GCSE_LTE), including details about the MB2 reference point.