What will be printed when the following C# code runs?

What will be printed when the following C# code runs?

class Alpha {
  public Alpha() : this(20) {
    Console.WriteLine("No-arg constructor");
  }
  public Alpha(int n) {
    Console.WriteLine($"Int constructor: {n}");
  }
}

class Program {
  static void Main() {
    new Alpha();
  }
}