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: Anaesthesia
[{'content': 'Shape of adult larynx is: \nSelect and explain. \nA. Cylindrical, B. Funnel shaped, C. Inveed funnel shape, D. None of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: Classic teaching has been that the adult larynx is cylindrical and the infant larynx is funnel shaped. Ref: Miller's anesthesia-7th ed , Chapter 82.", 'role': 'assistant'}]