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: Dental
[{'content': 'In root fracture 4 angled radiograph are taken at: \nSelect and explain. \nA. 110 degree, B. 90 degree, C. 45 degree, D. All of the above.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: other than these 3, 1more is taken that is occlusal film.', 'role': 'assistant'}]