The correct answer is B. The R82 Logging and Monitoring Administration Guide describes log storage disk-management behavior where old log and index files can be deleted when available disk space falls below the configured threshold. The search extract specifically identifies the default threshold behavior: when disk space is below 5000 MBytes, old files begin to be deleted. Option A is incomplete because alerts can be configured for disk thresholds, but the question asks what happens at the default 5000 MB deletion threshold. Option C is wrong because logging does not immediately stop at that threshold; stopping logging is controlled by a different lower threshold. Option D is unsupported because the default response is disk maintenance by deleting older files, not running a script. Operationally, this prevents the log partition from filling completely while retaining as much recent searchable logging as possible. Reference topics: Log Server disk management, log storage thresholds, deleting old log files, Logging and Monitoring.