You create an XML Web service project that consists of three services named BronzeService, SilverService, and GoldService. All three services are located in the same virtual directory on a production computer. When customers subscribe to your service, they select only one of the three available services.
A new customer subscribes to SilverService. You need to create a discovery document that enables this customer to use only SilverService.

Which discovery document should you create?

A.
<disco:discovery
xmlns:disco=”http://schemas.xmlsoap.org/disco/”
xmlns:scl=http://schemas.xmlsoap.org/disco/scl/>
<scl:contractRef ref=”SilverService.asmx?wsdl” />
</disco:discovery>

B.
<disco:discovery
xmlns:disco=”http://schemas.xmlsoap.org/disco/”
xmlns:scl=”http://schemas.xmlsoap.org/disco/scl/”>
<scl:contractRef ref=”SilverService.asmx” />
</disco:discovery>

C.
<dynamicDiscovery xmlns=”urn:schemas-dynamicdiscovery:disco.2000-03-17″> <exclude path=”_vti_cnf” />
<exclude path=”_vti_pvt” />
<exclude path=”_vti_log” />
<exclude path=”_vti_script” />
<exclude path=”_vti_txt” />
<exclude path=”Web References” />
</dynamicDiscovery>

D.
<dynamicDiscovery xmlns=”urn:schemas-dynamicdiscovery:disco.2000-03-17″> <exclude path=”_vti_cnf” />
<exclude path=”_vti_pvt” />
<exclude path=”_vti_log” />
<exclude path=”_vti_script” />
<exclude path=”_vti_txt” />
<exclude path=”Web References” />
<exclude path=”BronzeService.asmx” />
<exclude path=”GoldService.asmx” />
</dynamicDiscovery>