Citizenship

I will have my interview on 8/16/18, I really need help regarding two questions on n400:
1- Have you ever been arrested or cited by a law officer? I said no thinking it has to be a physical arrest but some say that driving infractions are part of it, in which case I received two tickets for using cellphone in two different occasions, but both paid with receipt. How can I answer this question?
2- Question #44 which states have you ever lived in USA between age 18 and 26 for selective service registration. I said No which is incorrect because I was here between age 18 and 26. How can I change that answer and justify that I had no clue about selective service. I would really appreciate your input. Thanks in advance;