using System;

public class Program

{

    public static void Main()

    {

        var person = new Person { FirstName = "Lauren", LastName = "Pango" };

        person.LastName = "Tango";

    }

    public class Person {

        public string? FirstName { get; init; }

        public string? LastName { get; set; } // change this to init and see what happens on line 8 when you try to reassign the LastName property

    }

}