The identity context is opaque to your web service client and web service and you dont need to perform any additional coding or processing in your client or service to support it after you enable identity context propagation. Which Oracle SOA Suite component directly enables this behavior? 

Answer options:

A. Oracle Web Service Manager Policy Manager
B. Oracle BPEL Process Manager
C. Oracle Enterprise Manager
D. Oracle User Messaging Service

D

Reference: https://docs.oracle.com/middleware/1212/ums/UMSAG/introduction.htm