This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Larynx, Subject name: ENT
[{'content': 'Sensory nerve supply above the level of vocal cords is: \nSelect and explain. \nA. Glossopharyngeal, B. Superior laryngeal, C. Recurrent laryngeal, D. Pharyngeal branch of vagus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sensory nerve supply to larynx above the level of vocal cords is superior laryngeal nerve, while below the cords it is recurrent laryngeal nerve. Superior laryngeal nerve is a branch of vagus. It divides into two branches - external laryngeal supplying motor fibres to cricothyroid muscle and an internal laryngeal nerve which runs submucosally in pyriform fossa and supplies the larynx.', 'role': 'assistant'}]