It could have been everything , and it could have been nothing . I think I was past caring . I walked , because there was nothing else for me to do . My chest still felt tight , like a coil wound .

Generate a question about the above context.
What is the feelling of a chest being " like a coil wound " ?
pick from the following.
I. None of the above choices .
II. Coils are what you have when you whip someone with a lash .
III. This means you feel giddy .
IV. coils are when you twist yourself up tightly .