Arrange the following long acting LA in descending order of their duration of action.
Dibucaine is longest acting and most toxic.
Etidocaine: 200minutes.
Tetracaine~Bupivacaine:175 minutes.
Dibucaine>Etidocaine>Tetracaine> Bupivacaine.
Dibucaine>Tetracaine>Bupivacaine> Etidocaine.
Tetracaine>Dibucaine>Bupivacaine>Etidocaine.
Tetracaine>Bupivacaine>Dibucaine> Etidocaine.