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
Long acting local anaesthetic ? 
Select and explain. 
A. Procaine, B. Lignocaine, C. Prilocaine, D. Dibucaine
D: Dibucaine
Answer: D: Dibucaine 
Explanation: Ans. is 'd' i.e., Dibucaine