You are developing a Windows Communication Foundation (WCF) service to replace an existing ASMX Web service.The WCF service contains the following code segment. (Line numbers are included for reference only.)<br /> 01 [ServiceContract（　）]<br /> 02<br /> 03 public interface IEmployeeService<br /> 04 {<br /> 05 [OperationContract（　）]<br /> 06 EmployeeInfo GetEmployeeInfo(int employeeID);<br /> 07<br /> 08 }<br /> 09<br /> 10 public class EmployeeService : IEmployeeService<br /> 11 {<br /> 12<br /> 13 public EmployeeInfo GetEmployeeInfo(int employeeID)<br /> 14 {<br /> 15 ...<br /> 16 }<br /> 17 }<br /> 18<br /> 19<br /> 20 public class EmployeeInfo<br /> 21 {<br /> 22 ...<br /> 23 public int EmployeeID { get; set; }<br /> 24 public string FirstName { get; set; }<br /> 25 public string LastName { get; set; }<br /> 26<br /> 27 }The existing Web service returns the EmployeelD as an attribute of the Employeelnfo element in the response XML.You need to ensure that applications can consume th