Question: In which scenarios is resource efficiency for RAN sharing supported?
Option 1: Only in the Multiple Cell-ID Broadcast scenario
Option 2: Only in the MOCN (Multi-Operator Core Network) scenario
Option 3: In both the Single Cell-ID Broadcast and MOCN scenarios
Option 4: In both the MOCN and Multiple Cell-ID Broadcast scenarios
Explanation: Resource efficiency for RAN sharing is supported in both the MOCN (Multi-Operator Core Network) scenario, where multiple operators share a common core network, and the Multiple Cell-ID Broadcast scenario, where multiple cell IDs are broadcast to support resource sharing among different operators.