Which Active Record link should I choose in my case?

Question

Ruby on Rails

I am developing an educational application like Toster. There are questions, for every question there are answers, for every answer there is an author.
How to make associations in this case?

Answer 1

[Question] belongs_to [Author (user)]
[Question] has_many [Answers]
[Answer] belongs_to [Author (user)]
In my opinion everything is straightforward, if there are no special requirements.