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': 'All of the following ossification centers are present at 7 months of intrauterine life except ? \nSelect and explain. \nA. Talus, B. Calcaneum, C. Clavicle, D. Olecranon', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Olecranon", 'role': 'assistant'}]