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: Surgery
[{'content': 'In which stage of anaesthesia patient becomes hyperactive: \nSelect and explain. \nA. Stage 1, B. Stage 2, C. Stage 3, D. Stage 4', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Stage I – Analgesia and conscious sedation\nStage II – Stage of delerium\nStage III – Stage of surgical anesthesia\n\nPlane I – Pupils dilate progressively with the depth of anesthesia. Lid reflex, swallowing, retching and vomiting get abolished. Corneal reflex present. Conjunctival reflex is absent. Pharyngeal reflex lost.\nPlane II – Eye balls fixed, reflexes arising from the larynx also abolished.\nPlane III – Asynchrony between thoracic and abdominal movements. Progressive paralysis of intercostal muscles, pupillary light reflex and the corneal reflex is lost.\nPlane IV – Complete intercostal muscle paralysis. Pupils are dilated. Muscles are flaccid.\n\nStage IV – Stage of respiratory paralysis', 'role': 'assistant'}]