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': 'Three dimensional localization of a tooth in maxillary sinus is best achieved with the following \nSelect and explain. \nA. IOPA + maxillary Occlusal, B. Lateral cephalogram + maxillary occlusal, C. OPG + maxillary occlusal, D. Water + maxillary occlusal', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]