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: Forensic Medicine
[{'content': 'Ossification centre appearing just before birth is- \nSelect and explain. \nA. Lower end of femur, B. Lower end of tibia, C. Upper end humerus, D. Scaphoid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]