• A Array indexes start at 0, with the first item referenced as [0], the second item as [1], and so on.
  • B Array indexes start at 1, with the first item referenced as [1], the second item as [2], and so on.
  • C Array indexes start at -1, with the first item referenced as [-1], the second item as [0], and so on.
  • D Array indexes can be arbitrary and are not fixed.