This all sounds like something they want YOU to decide.
Situational irony results when things happen in precisely the way we didn't expect them to.
The issue of Phillip's vision causes some situational irony: the only time he literally sees Timothy clearly is when he fails to "see" him as the kind man he is instead of an untrustworthy black man, which he isn't. And then Phillip goes literally blind and only then learns to "see" Timothy correctly.
I believe that the only one of these is true is repetition to create a haunting effect. I know for certain that the first and last answers are not true.
