This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
Dofetilide is which class of anti arrhythmia drug 
Select and explain. 
A. Class 1, B. Class 11, C. Class 111, D. Class 1V
C: Class 111
Answer: C: Class 111 
Explanation: Refer kDT 7/e 529 Dofetilide is a class III antiarrhythmic agent Dofetilide is used for the maintenance of sinus rhythm in individuals prone to the occurrence of atrial fibrillation and flutterarrhythmias, and for chemical cardioversionto sinus rhythm from atrial fibrillation and flutter