input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Rapid onset of action seen by local anesthesia in small nerve endings is due to   (A) Increased threshold of small nerves due to depolarization   (B) Low pH of small nerve fibres   (C) High ratio of surface area to the volume of small nerve fibres   (D) Increased resting potential of small nerve fibres
output: ['(C) High ratio of surface area to the volume of small nerve fibres <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Increased threshold of small nerves due to depolarization  (B) Low pH of small nerve fibres  (C) High ratio of surface area to the volume of small nerve fibres  (D) Increased resting potential of small nerve fibres <> possible answers', '  Rapid onset of action seen by local anesthesia in small nerve endings is due to <> context']