On part II, question 30-a, it asked if I am an alien that has failed to present the documentations of vaccinations. Well, currently, I can't present. But as I understand, DS-230 part II will be used only during the interview. Before interview I will be required to have medical examination and vaccination injections. So at the time of interview I will surely have the vaccination documents ready.
I called the NVC, a lady asked me to answer "yes" and attach a letter to explain this situation. But then during the interview, I will have to change the answer to "no", right? It dosen't make sense for me......
What should I do? If I really answer "yes" to that question, will I get any unnecessary problem or delay?