Question: What is a key aspect of the independence between Normal GSM operations and SIM Application Toolkit (SAT) tasks in both the Subscriber Identity Module (SIM) and Mobile Equipment (ME)?
Option 1: The SAT task can only execute after all Normal GSM operations are completed.
Option 2: The currently selected Elementary File (EF) for Normal GSM tasks is automatically updated during SAT activity.
Option 3: Normal GSM and SAT tasks share the same command-response pair queue, with prioritization based on urgency.
Option 4: The state of the currently selected EF and record pointer for Normal GSM tasks remains unchanged by SAT activities, if still valid.
Explanation: This correct answer reflects the independence requirement between Normal GSM operations and SIM Application Toolkit tasks. It ensures that the execution of SAT commands does not interfere with the state of ongoing or pending Normal GSM tasks, maintaining the integrity and continuity of both types of operations in the SIM and ME.