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
[{'content': 'Maxillary sinus epithelium is made of ? \nSelect and explain. \nA. Pseudostratified columnar, B. Ciliated columnar, C. Simple columnar, D. Stratified squamous non-keratinized', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is'b'i.e., Ciliated columnarLining epithelium of paranasal sinuses is ciliated columnar with goblet cells.", 'role': 'assistant'}]