Question: In a GPRS/EPS setup for IMS, what determines if Policy and Charging Control is required?
Option 1: The User Equipment's (UE) subscription profile alone
Option 2: Either provisioning or the Access Point Name (APN) of the PDN connection, as determined by the GGSN/P-GW
Option 3: Always mandated for all E-UTRAN accesses but optional for GERAN/UTRAN
Option 4: The type of application being used on the UE (e.g., video streaming vs. voice call)
Explanation: The need for Policy and Charging Control is determined by the GGSN/P-GW, based on provisioning and/or the APN of the PDN connection, allowing for flexible management of network resources and billing policies.