Question: What action does the UE take when it receives a securityCellSetId that matches an existing entry in the sk-CounterConfigToAddModList within the VarConditionalReconfig?
Option 1: The UE adds a new entry for this securityCellSetId within the VarConditionalReconfig.
Option 2: The UE replaces the sk-CounterList within the VarConditionalReconfig with the sk-CounterList according to the received securityCellSetId.
Option 3: The UE removes the entry with the matching securityCellSetId from the sk-CounterConfigToAddModList.
Option 4: The UE ignores the received securityCellSetId and takes no action.
Explanation: According to the specification, when the UE receives a securityCellSetId that matches an existing entry in the sk-CounterConfigToAddModList within the VarConditionalReconfig, it replaces the sk-CounterList within the VarConditionalReconfig with the sk-CounterList according to the received securityCellSetId. This ensures that the UE updates its configuration with the latest information received from the network.