This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Airway, Subject name: Anaesthesia
[{'content': 'Name the given device \nSelect and explain. \nA. Oropharyngeal airway, B. Nasopharyngeal airway, C. Proseal airway, D. Flexometallic LMA', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Above image is of Nasopharyngeal airway Introduced from nasal cavity Measure size of the airway (tip of the nose to ear lobule) Measure the right size, lubricate it, through nasal cavity introduce it Better tolerated in the awake, semicomatose, or lightly anesthetized patient.', 'role': 'assistant'}]