Question: What action does a UE (User Equipment) take when `pauseReporting` is set to `true` for an application layer measurement configuration, and at least one segment of a segmented `MeasurementReportAppLayer` message has been submitted for transmission?
Option 1: Immediately discard all stored application layer measurement report containers associated with the measConfigAppLayerId.
Option 2: Submit the remaining segments of the `MeasurementReportAppLayer` message, suspend submitting new reports, and store received but untransmitted reports for the affected measConfigAppLayerId.
Option 3: Release the application layer measurement configuration in UE variables VarAppLayerIdleConfig and VarAppLayerPLMN-ListConfig.
Option 4: Forward the measConfigAppLayerId to upper layers indicating a pause in reporting without taking any further action on stored or new reports.
Explanation: When `pauseReporting` is set to `true`, the UE must ensure that partially sent messages are completed, then pause the transmission of new measurement reports while storing any newly received reports for the specified configuration. This ensures data integrity and allows for resumption of reporting when instructed.