This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'The fetus can be considered ble if the following ossification center appears \nSelect and explain. \nA. Calcaneum, B. Manubrium sterni, C. Lower end of femur, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: .', 'role': 'assistant'}]