Question: Which legacy service continuities is supported in the 5G system for handovers between Next Generation Radio Access Network (NG-RAN) and other access networks?
Option 1: Voice service continuity from NG-RAN to GERAN (GSM/EDGE Radio Access Network)
Option 2: Voice service continuity from NG-RAN to UTRAN CS (UMTS Terrestrial Radio Access Network - Circuit Switched)
Option 3: Seamless handover between NG-RAN and UTRAN
Option 4: Video service continuity between 5GS (5G System) and UMTS
Explanation: Voice service continuity from NG-RAN to UTRAN CS is supported in the 5G system, allowing for continuous voice service when a User Equipment (UE) moves from a 5G network to a 3G (UTRAN) network, ensuring uninterrupted voice calls across these different radio access technologies.