A client is written that uses a REST API to interact with a server. Using HTTPS as the transport, an HTTP request is sent and received an HTTP response. The response contains the HTTP response status code: 503 Service Unavailable.
Which action is the appropriate response?
- Add an Authorization header that supplies appropriate credentials and sends the updated request.
- Resend the request using HTTP as the transport instead of HTTPS.
- Add an Accept header that indicates the content types that the client understands and send the updated request.
- Look for a Retry-After header in the response and resend the request after the amount of time indicated.