Question: Upon successful retrieval of an MBS User Service by the Network Exposure Function (NEF) from the Multicast/Broadcast Service Function (MBSF), what does the NEF include in the response body of the Nnef_MBSUserService_Retrieve response to the Application Function (AF)?
Option 1: A list of all available MBS User Services at the NEF
Option 2: A representation of the requested Individual MBS User Service resource within the MBSUserService data structure
Option 3: An error code indicating successful retrieval but no service details
Option 4: A URI for further queries on MBS User Services
Explanation: This is correct because, upon receiving a successful response from the MBSF, the NEF returns a Nnef_MBSUserService_Retrieve response with a success status code and includes in the response body a representation of the requested Individual MBS User Service resource, formatted within the MBSUserService data structure, ensuring the AF receives the specific service details it requested.