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
Arrhythmias refractory to the treatment of lignocaine can be treated by 
Select and explain. 
A. Sotalol, B. Diltiazem, C. Amiodarone, D. Quinidine
C: Amiodarone
Answer: C: Amiodarone 
Explanation: Katzung 11e p 241. Amiodarone is an antiarrhythmic medication used to treat and prevent a number of types of irregular heabeats. This includes ventricular tachycardia, ventricular fibrillation, and wide complex tachycardia, as well as atrial fibrillation and paroxysmal supraventricular tachycardia.