Which of the following is long acting local anesthetic > 2hrs – a) Bupivacaineb) Prilocainec) Etidocained) Dibucainee) Tetracaine

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.