Question: What is the primary purpose of the Nnef_BDTPNegotiation_Update service operation in the 5G System (5GS)?
Option 1: To retrieve the current background data transfer policy.
Option 2: To request a change in the stop notification settings.
Option 3: To set the selected background data transfer policy for the consumer.
Option 4: To query the status of ongoing background data transfers.
Explanation: The Nnef_BDTPNegotiation_Update service operation is used to update the background data transfer policy settings. It takes the Background Data Transfer Reference ID and the new background data transfer policy as inputs, indicating that its primary purpose is to set the selected policy for the consumer.