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': 'On X-ray which of the following can be find most accurately \nSelect and explain. \nA. Acute pulpits, B. Periapical granuloma, C. Mental foramen, D. Cementoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]