A Windows Communication Foundation (WCF) service is self-hosted in a console
application. The service implements the IDataAccess contract, which is defined in the
MyApplication namespace. The service is implemented in a class named
DataAccessService, which implements the IDataAccess interface and also is defined in the
MyApplication namespace. The hosting code is as follows. (Line numbers are included for
reference only.) 01 static void Main(string[] args) 02 { 03 ServiceHost host; 04 05
host.Open(); 06 Console.ReadLine(); 07 host.Close(); 08 } You need to create a
ServiceHost instance and assign it to the host variable. You also need to instantiate the
service host. Which line of code should you insert at line 04?

A.
host = new ServiceHost(typeof(IDataAccess));

B.
host = new ServiceHost(“MyApplication.IDataAccess”);

C.
host = new ServiceHost(“MyApplication.DataAccessService”);

D.
host = new ServiceHost(typeof(DataAccessService));