I believe it is A.; metaphor.
If I'm wrong, so sorry, but I hope this helps! :)
The collapse of the World trade center APEX
I say go for it...never know may learn something insteresting.
About two hours ago, I was doing my homework.
I am so sorry I don’t know what you are referring to, but if you could comment on my answer I would be glad to help you with this question when I have a better understand of this question.