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: Anaesthesia
A 30 year old lady is to undergo surgery under intravenous regional anesthesia for her left 'trigger finger'. Which one of the following should not be used for patient? 
Select and explain. 
A. Lignocaine, B. Bupivacaine, C. Prilocaine, D. Lignocaine + ketorolac.
B: Bupivacaine
Answer: B: Bupivacaine 
Explanation: B i.e. Bupivacaine