Constructor in c#

Question : What is the output of the below code?

using System;

using System.Text;

namespace ConsoleApplication1

{

    class A

    {

        public A()

        {

            Console.WriteLine("A.Constructor");

        }

        public A(string abc)

        {

            Console.WriteLine("A.Constructor " + abc);

        }

        public void Show()

        {

            Console.WriteLine("A.Show()");

        }

    }

    class B : A

    {

        public B() : base("Hello")

        {

            Console.WriteLine("B.Constructor");

        }

        public void Show()

        {

            Console.WriteLine("B.Show()");

        }

    }

    

    class Program

    {

        static void Main(string[] args)

        {

            B obj = new B();

            obj.Show();

            Console.ReadLine();

        }

    }

}

Please comment your answer below...