Question: What does the 'MODIFICATION' value (2) of the Packet-Filter-Operation AVP indicate in the context of UE-initiated resource operations for PCC rules?
Option 1: The UE is requesting deletion of all previously allocated resources.
Option 2: The UE is seeking to add new packet filters without altering existing ones.
Option 3: The UE wants to release all held resources and terminate the PCC session.
Option 4: Changes are being made to reserved QoS, filter settings, precedence, or other fields for specified packet filter identifiers.
Explanation: The 'MODIFICATION' value (2) signifies that the UE is initiating changes to either the reserved QoS, the filter itself, the precedence, or any other relevant fields associated with the provided packet filter identifiers, indicating an update or alteration rather than a complete addition or deletion of resources.