using System;

​

public class A

{

    public virtual void Info(){

        //Output "This is A";   

    }

}

​

public class B:A{

    public override void Info(){

        //Output "This is B";

    }

}

​

public class C:A{

    new public void Info(){

        //Output "This is C";

    }

}

public class Program

{

    public static void Main()

    {

        A item1 = new B();

        A item2 = new C();      

        item1.Info();

        item2.Info();       

    }

}