You are working with a project team that wants to deploy the Vacation Request service that allows employees to request information regarding the vacation days they are entitled to. The project team has come up with a sample XML fragment that they would like to use as the basis for the request message that the Vacation Request service will receive, as follows: 12311K/empID> The "vacationRequest" element (which will be placed inside a SOAP "Body" element) contains a child "empID" element that will provide the employee ID used by the Vacation Request service to perform a search. Your task is to define an XML schema for this message and to incorporate the schema into the Vacation Request WSDL definition by embedding the schema content and mapping the XML Schema elements to the appropriate WSDL elements. Which of the following correctly accomplishes this?