You create a service-oriented architecture (SOA) application that will be deployed on a Windows HPC Server 2008 cluster. You create a Windows Communication Foundation (WCF) service. The assembly name of the WCF service is ContosoService.dll. The Metadata Exchange (MEX) endpoint of the service is exposed in the following URL: http://contoso.com/ContosoService/mex. You plan to provide the service metadata files offline to the development team of a client application. You need to export the service metadata files of the WCF service.
Which command should you run?

A.
svcutil.exe ContosoService.dll

B.
svcutil.exe /t:metadata /dconly ContosoService.dll

C.
svcutil.exe /a /edb /i http: //contoso.com/ContosoService/mex

D.
svcutil.exe /validate /serviceName:ContosoService ContosoService.dll