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': 'The fetus can be considered viable 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: Ossification center for lower end femur appears at the end of 9th month of intrauterine life.\nFor calcaneum and manubrium sterni it appears by the end of 5th month.', 'role': 'assistant'}]