Question: What does the MBMS-Counting-Information AVP indicate about the MBMS Service that is about to start?
Option 1: The type of access technology used (e.g., UTRAN, GERAN).
Option 2: The number of users subscribed to the MBMS service.
Option 3: The quality of service required for the MBMS transmission.
Option 4: Whether the MBMS Counting procedures are applicable or not.
Explanation: The MBMS-Counting-Information AVP contains explicit information about whether the MBMS Counting procedures are applicable for the MBMS Service that is about to start, indicating whether counting is required or not.