I don't think it's a required document but it might be a good idea to have it (and a copy) at the interview. I included it in my AOS app. as supplemental evidence. If you are in a similar situation, then I would definitely take it to the interview. Better over-prepared than under.
thanks... I'm also wondering if there is any additional processing questionnaire sent by NVC or other sources as it is mentioned in the documents checklist provided by US embassy Dhaka.
... surprised they informed you so late ... Good luck with the interview!