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
High air way resistance is seen in 
Select and explain. 
A. Respiratory bronchiole, B. Terminal bronchiole, C. Intermediate bronchiole, D. Main bronchus
D: Main bronchus
Answer: D: Main bronchus 
Explanation: D i.e. Main bronchus Medium size airways like main bronchus has maximum resistanceQ