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': 'Which of the following is used to measure the mineral bone density of mandible? \nSelect and explain. \nA. Micro radiography, B. Auto radiography, C. Finite element modelling, D. Nuclear volume morphometry', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Micro radiography is used to measure the mineral bone density of mandible.', 'role': 'assistant'}]