Question: In a scenario where a UE requests PCC rules for services unknown to the PCRF, but the user is not authorized for AF session-based services, what action may the PCRF take regarding bitrate parameters and QCI?
Option 1: The PCRF must reject the request due to lack of authorization for AF sessions.
Option 2: The PCRF will always upgrade the bitrate parameters and maintain the highest QCI possible.
Option 3: The PCRF may downgrade the bitrate parameters and adjust the QCI according to its internal PCC policies.
Option 4: The PCRF will request additional user credentials before making any decision on resource allocation.
Explanation: When the PCRF receives a request for unrecognized services, and the user lacks AF session authorization, it may manage resources by downgrading bitrate parameters and adjusting QCI based on internal PCC policies, balancing network performance with service provision.