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
Lining epithelium of ventricles of brain ? 
Select and explain. 
A. Squamous, B. Columnar, C. Cuboidal, D. Transitional
B: Columnar
Answer: B: Columnar 
Explanation: Ans. is 'b' i.e., Columnar Ventricles of brain and central canal of spinal cord are lined by simple ciliated columnar epithelium. Types of epithelium and their distribution have been explained in details in previous sessions.