You create a Windows Communication Foundation (WCF) application by using Microsoft .NET Framework 3.5.
The desktop client calls the WCF service to query its status. The call can take up to 10 seconds to complete.
The client application must remain responsive when querying the service.
You need to generate the required proxy. What should you do?

A.
Execute the svcutil http://localhost:8000/MyWCF /async command.

B.
Execute the svcutil myServiceHost.exe /serviceName:MyWCF command.

C.
Execute the svcutil /validate /serviceName:MyWCF myServiceHost.exe command.

D.
Clear the Generate asynchronous operation check box in the Add Service Reference Settings dialog box