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
Not used topically is: 
Select and explain. 
A. Lignocaine, B. Bupivicaine, C. Dibucaine, D. Tetracaine
B: Bupivicaine
Answer: B: Bupivicaine 
Explanation: Bupivicaine