Last year, I accidentally filled Form-1040 first, then I realized that I need to file 1040NR-EZ. So I filled 1040X and 1040NR-EZ last year itself.
Now I was filling the 1040NR form this year and there is a question in it "Did you file a U.S. income tax return for any prior year? If “Yes,” give the latest year and form number you filed"
How should I answer that question? Should I say 2017 Form 1040NR-EZ? or 1040X or 1040?