C# Logic wont work

im new to C# and my logic wont work it keeps on displaying my else command there is no errors

///////////////////////////////////////////////////////////////////
        int age = 12;
        if ((age <= 0) && (age >= 12))
        {
            Console.WriteLine("You are young");
        }
        else if ((age <= 13) && (age >= 17))
        {
            Console.WriteLine("You're a teen");
        }
        else if ((age <= 18) && (age >= 50))
        {
            Console.WriteLine("You're an adult");
        }
        else if ((age <= 51) && (age >= 120))
        {
            Console.WriteLine("You're Elderly");
        }else
        {
            Console.Beep();
        }
        ///////////////////////////////////////////////////////////////////