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: Anatomy
Trachea is lined by - 
Select and explain. 
A. Stratified squamous epithelium, B. Ciliated columnar epithelium, C. Simple columnar epithelium, D. Pseudostratified columnar epithelium
D: Pseudostratified columnar epithelium
Answer: D: Pseudostratified columnar epithelium 
Explanation: None