Question: What does the AMF set in the NETWORK SLICE-SPECIFIC AUTHENTICATION COMMAND message for the EAP-request message generated by the AMF or provided by the AAA-S via the NSSAAF?
Option 1: The S-NSSAI IE to the HPLMN S-NSSAI or the SNPN S-NSSAI.
Option 2: The UE's IP address.
Option 3: The EAP message IE to the EAP-request message which is generated by the AMF or provided by the AAA-S via the NSSAAF.
Option 4: The authentication method.
Explanation: According to the procedure for initiating network slice-specific EAP message reliable transport, the AMF sets the EAP message IE of the NETWORK SLICE-SPECIFIC AUTHENTICATION COMMAND message to the EAP-request message generated by the AMF or provided by the AAA-S via the NSSAAF. This is a critical step in the authentication process, as it ensures that the correct EAP-request message is conveyed to the UE for network slice-specific authentication and authorization.