A developer has exposed an internal-hosted service (an inbound service) to the outside world using a Service
Integration Bus (SIBus). When an incoming request for the service is received, what usually happens?

A.
Incoming requests are received at an endpoint, then passed to an inbound port and sent on to the service
destination. Responses follow the same path in reverse.

B.
Incoming requests are received at a port destination, then passed to an inbound port and sent on to the
service destination. Responses follow the same path in reverse.

C.
Incoming requests are received at an endpoint, then passed to a mediation point and sent on to the
service destination. Responses use a port destination to reach the client.

D.
Incoming requests are received at a port destination, then passed to a mediation point and sent on to the
service destination. Responses use a port destination to reach the client.