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': 'Acute osteomyelitis is most frequently caused by which of the following microorganisms? \nSelect and explain. \nA. Gonococcus, B. Enterococcus, C. Streptococcus, D. Staphylococcus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]