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
Which of the following is long acting local anesthetic > 2hrs – a) Bupivacaineb) Prilocainec) Etidocained) Dibucainee) Tetracaine 
Select and explain. 
A. bce, B. acde, C. abcd, D. abde
B: acde
Answer: B: acde 
Explanation: Short duration (< 30 min) :- Chlorprocaine, procaine.
Moderate duration (30-90 min) :- Lignocaine, mepivacaine, Prilocaine, cocaine.
Long duration (> 120 min) :- Bupivacaine, levobupivacaine, Tetracaine, Etodicaine, Ropivacaine, Dibucaine.