question: What is Network Slice-Specific Authentication and Authorization (NSSAA)? [3GPP Release 16] option 1: The authentication and authorization process for the SUPI in the 5G system option 2: The authentication and authorization process for the network slice in the 5G system option 3: The authentication and authorization process for the AMF in the 5G system option 4: The authentication and authorization process for the V-SMF in the 5G system option 5: The authentication and authorization process for the AAA-S in the 5G system 