This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Regional anaesthesia, Subject name: Anaesthesia
For Bier's block drug of choice is - 
Select and explain. 
A. Priloacaine, B. Bupivacaine, C. Lignocaine, D. None
C: Lignocaine
Answer: C: Lignocaine 
Explanation: Lignocaine is used for Bier&;s block Bupivacaine is contraindicated in IV regional anaesthesia due to fear of arrhythmia