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': 'Hinge axis is best detected by \nSelect and explain. \nA. Face bow transfer and freely adjustable condylar pieces, B. Face bow with three point articulator, C. With face bow only, D. With articulator only', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]