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': 'Periosteal new bone formation is seen in: \nSelect and explain. \nA. Caffey’s disease, B. Hypervitaminosis A, C. Syphilis, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Periosteal new bone formation is seen in:\n\nCaffey's disease or infantile cortical hyperostosis\nHypervitaminosis A\nSyphilis, leukemia, Ewing's sarcoma, etc.\nGarre's osteomyelitis\nAcute osteomyelitis is most frequently caused by which of the following microorganisms (Al 02, 03) (Staphylococcus aureus and Staph Albus)", 'role': 'assistant'}]