You need to modify a client application that consumes a Windows Communication
Foundation (WCF) service. The service metadata is no longer available. You need to modify
the previously generated proxy to include asynchronous calls to the service. What should
you do?
A.
Create a class with the same name as the previously generated proxy and add the new
asynchronous methods as partial methods. Add the new class to a namespace that is
different from the original proxy.
B.
Update the service reference with the Generate asynchronous operations option.
C.
Create a partial class for the previously generated proxy and include the new
asynchronous methods.
D.
Create a class with the same name as the previously generated proxy and add the new
asynchronous methods. Add the new class to a namespace that is different from the original
proxy.