using System;

public class Program

{

    public static void Main()

    {

        bool a = true;

        // bool a = false;

        bool b = false;

        bool c = true;

        bool d = false;

​

        if (a)  // a is true

        {

            Console.WriteLine("Process B");

            Console.WriteLine("Process C");

            Console.WriteLine("Process D");

        }

        else    // a is false

        {

            if (b)

            {

                Console.WriteLine("Process B");

            }

            if (c)

            {

                Console.WriteLine("Process C");

            }

            if (d)

            {

                Console.WriteLine("Process D");

            }

        }

    }

}