using System;

public class Program

{

    public static void Main()

    {

        Ferrari fobj = new Ferrari();

        fobj.Size();        

    }

}

​

public class TyreSize

{

    public TyreSize()

    {

    }

    public virtual void Size()

    {

        Console.WriteLine("Default Tyre size is 14inches.");

    }

}

​

public class Ferrari : TyreSize

{

    public override void Size()

    {

        base.Size();

        Console.WriteLine("Tyre Size is extended upto 16inches for Ferrari type cars.");

    }       

}

​