Question: What is the primary purpose of the Nnef_MemberUESelectionAssistance_Unsubscribe service operation?
Option 1: To create a new subscription for Member UE selection assistance information in NEF.
Option 2: To delete an existing subscription for Member UE selection assistance information in NEF.
Option 3: To update an existing subscription for Member UE selection assistance information in NEF.
Option 4: To retrieve the current status of a subscription for Member UE selection assistance information in NEF.
Explanation: The Nnef_MemberUESelectionAssistance_Unsubscribe service operation is used to delete an existing subscription for Member UE selection assistance information that is already created in NEF. This is evident from the description of the service operation, which states that the NF consumer deletes a subscription.