If I didn't take the standard mileage deduction in 2019 or deduct my actual mileage expenses, but I'm deducting miles for 2020, what do I do?

TurboTax asks "Did you take the standard mileage deduction in 2019 for [my vehicle]?" and the options are "Yes, I took the standard mileage deduction in 2019" and "No, I deducted my actual expenses in 2019," but I didn't do either of those things.