【单选题】An 83-year-old man with a history of hypertension and diabetes is referred to you for management after presenting to the emergency department last week with several hours of recent-onset palpitations....
A.
His stroke risk is similar regardless of whether his atrial fibrillation is paroxysmal, persistent, or permanent.
B.
His stroke risk would be considerably lower if he had atrial flutter like his nephew.
C.
His stroke risk is similar to that of the age-matched general population.
D.
His stroke risk 1 week after cardioversion is lower than it was prior to cardioversion