What is the correct URL for a client to post an http message to the HTTP_AAE adapter of SAP Process Orchestration?

What is the correct URL for a client to post an http message to the HTTP_AAE adapter of SAP Process Orchestration?
A . http://<host>:<port> /sap/xi/adapter_plain?< query-string></query-string> </port> </host>
B . http:// <host>:< port> I HttpAdapter/HttpMessageServlet?<query – string></ query – string><vu/port> </ host>
C . http://< host>:< port> I HttpAdapter/service?<query – string></ query – string></port></ host
D . http://<`host>:< port>/ sap/ http / sender?<query – string></ query – string></ port></ host>

Answer: B