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
Best used in digoxin induced arrhythmia- 
Select and explain. 
A. Phenytoin, B. Lignocaine, C. Quinidine, D. Procainamide
B: Lignocaine
Answer: B: Lignocaine 
Explanation: Ans. is 'b' i.e., Lignocaine o Lignocaine is DOC for digitalis induced ventricular arrhythmias.o Phenytoin is an alternative.