Today is after the effective date of the new rule.

At any point after the rule's effective date did you cross the border into the US on the F visa? (Ex: If you entered the US for the first time, choose "YES." Or, if you departed the US then re-entered the US on the F Visa after the rule's effective date, choose "YES.")
Select NO if you entered the US before the rule was effective, and you never left.

                                 
YES                NO