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
All of the following statements about lignocaine are true EXCEPT : 
Select and explain. 
A. It blocks active sodium channels with more affinity than resting sodium channels, B. It can cause cardiotoxicity, C. It is given orally for treatment of cardiac arrhythmias, D. Adrenaline increases the duration of action of lignocaine when used for infiltration anaesthesia.
C: It is given orally for treatment of cardiac arrhythmias
Answer: C: It is given orally for treatment of cardiac arrhythmias 
Explanation: None