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: Anatomy
[{'content': 'Bones ossified at bih: \nSelect and explain. \nA. Lower end of femur, B. Calcaneum, C. Upper end tibia, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e., Lower end femur B i.e., Calcaneum C i.e., Upper end tibia', 'role': 'assistant'}]