Question: What is a prerequisite for the presence of the EFVBSS (Voice Broadcast Service Status) elementary file in a USIM application?
Option 1: The allocation of EFVBS (Voice Broadcast Service) and the availability of service n°58.
Option 2: Only the allocation of EFVBS (Voice Broadcast Service).
Option 3: The activation of Voice Broadcast Service in the network.
Option 4: The presence of a specific Group Identifier in EFVGCSS.
Explanation: This is correct because the specifications require both the availability of service n°58 and the allocation of EFVBS for the EFVBSS file to be present, indicating a dual prerequisite.