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
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: 
Select and explain. 
A. Osteogenesis imperfecta, B. Osteopetrosis, C. Osteochondroma, D. Hyperparathyroidism
B: Osteopetrosis
Answer: B: Osteopetrosis 
Explanation: None