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: Pathology
[{'content': 'A 10-year-old child presents with anemia and recurrent fractures. The X-ray shows diffuse hyper density of bone. The diagnosis is most likely to be: \nSelect and explain. \nA. Osteogenesis imperfecta, B. Osteopetrosis, C. Osteochondroma, D. Hyperparathyroidism', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]