I am having my citizenship interview in couple of weeks. On the interview letter, it said I need to bring 'Must' have documents.

Asked in Rahway, NJ - 9 months

One of the documents is 'Evidence of Selective Service Registration'. However, since i was on a valid non-immigrant visa till my 26th birthday (F-1 & H-1), I was NOT required to register. What kind of evidence I need to bring to the interview? Would the F-1, H-1 visa documents suffice to prove that I was on a valid non-immigrant visa OR do i still need to contact the selective service and get a status letter (Not sure if it would come on time). Also, I am wondering whether the 'Must' have documents on the interview letter is same for all applicants as in my case I clearly stated that I didn't register for selective service on N-400 application but now I am being asked to bring an evidence of selective service registration.