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: Radiology
[{'content': "The best radiographic projection for viewing maxillary sinus : \nSelect and explain. \nA. Submentovertex, B. PA view, C. Waters view, D. Towne's projection", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]