In Income section, re.paying tax on my state 2017 refund. It asks "Did you have to itemize your deductions in 2017?" How do I know if I HAD to itemize? I don't know.

I have been using an accountant to prepare my taxes for the past 10 years so I don't know if HAD to itemize in 2017, but I did itemize. How do I determine that?