This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Longest T 1/2 is of which drug ? 
Select and explain. 
A. Amiodarone, B. Quinidine, C. Diltiazem, D. Procainamide
A: Amiodarone
Answer: A: Amiodarone 
Explanation: Ans. is 'a' i.e., Amiodarone o Amiodarone is the longest acting antiarrhythmic.