Question: What happens when the `MeasurementResults` parameter in the `CatGetNetworkMeasurementResults` function is null, according to the API conformance requirements?
Option 1: The function returns an error code indicating a null pointer exception.
Option 2: The invocation is treated as a No Operation (NOP) and the function returns `CAT_SUCCESS`.
Option 3: The function attempts to allocate memory for `MeasurementResults` before proceeding.
Option 4: The function returns a default set of network measurement results.
Explanation: According to the conformance requirements for `CatGetNetworkMeasurementResults`, if the `MeasurementResults` parameter is null, the invocation is considered a No Operation (NOP), and the function returns `CAT_SUCCESS`, indicating successful execution without performing any actual operation. This behavior ensures graceful handling of null inputs, preventing potential crashes or undefined behavior.