Question: Upon initiating a procedure to report an RLC (Radio Link Control) failure, what information does the UE (User Equipment) set in the `FailureInformation` message regarding the location of the RLC entity?
Option 1: eNodeB ID where the RLC entity is registered
Option 2: Cell group where the RLC entity is located
Option 3: Sector ID of the cell hosting the RLC entity
Option 4: Tracking Area Code (TAC) of the RLC entity's location
Explanation: When reporting an RLC failure, the UE specifically sets the `cellGroupIndication` field in the `FailureInformation` message to indicate the cell group where the RLC entity experiencing the failure is located. This precise location information aids in diagnosing and resolving the issue efficiently within the cellular network's topology.