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': 'High air way resistance is seen in \nSelect and explain. \nA. Respiratory bronchiole, B. Terminal bronchiole, C. Intermediate bronchiole, D. Main bronchus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Main bronchus Medium size airways like main bronchus has maximum resistanceQ', 'role': 'assistant'}]