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
The following antiarrhythmic drug has the most prominent anticholinergic action 
Select and explain. 
A. Quinidine, B. Lignocaine, C. Disopyramide, D. Procainamide
C: Disopyramide
Answer: C: Disopyramide 
Explanation: Disopyramide It is a quinidine like Class IA drug that has prominent cardiac depressant and anticholinergic actions, but no a adrenergic blocking propey. Disopyramide usually has no effect on sinus rate because of opposing direct depressant and antivagal actions. Ref:- kd tripathi; pg num:-530