Question: Upon successful creation of an MBS Session Status subscription, what does the Network Exposure Function (NEF) return to the Application Function (AF), in addition to an HTTP '201 Created' status code?
Option 1: Only a 'Location' header with the URI of the created subscription resource
Option 2: Only a response body containing the created resource within the MbsSessionSubsc data structure
Option 3: A list of all active MBS sessions within the MBS service area
Option 4: Both a 'Location' header with the URI of the created subscription resource and a response body containing a representation of the created resource
Explanation: This is because, according to standard practices in HTTP for resource creation (as implied by the '201 Created' status code), providing both a 'Location' header for the newly created resource's URI and including a representation of the created resource in the response body is a comprehensive way to inform the client about the outcome. This approach aligns with RESTful API principles, ensuring the client has all necessary information to proceed, including how to access the new resource directly and its initial state.