Question: What is the requirement for a UICC holding a 3GPP application in terms of supporting voltage classes?
Option 1: The UICC must support all defined voltage classes (e.g., A, B, C).
Option 2: The UICC shall support at least two consecutive voltage classes (e.g., AB or BC), and if more are supported, they must be consecutive.
Option 3: Supporting only one voltage class is sufficient for a UICC with a 3GPP application.
Option 4: The UICC can choose any two non-consecutive voltage classes to support (e.g., AC).
Explanation: This option correctly reflects the requirement that a UICC with a 3GPP application must support at least two consecutive voltage classes, ensuring compatibility and flexibility in power supply without mandating support for all possible classes.