This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skeletal infections, Subject name: Anatomy
[{'content': 'Acute osteomyelitis is caused by \nSelect and explain. \nA. Staphylococcus aureus, B. Actinomyces bovis, C. Nocardia asteroids, D. Borelia vincenti', 'role': 'user'}, {'content': 'Answer: A \nExplanation: It is caused most commonly by staphylococcus aureus Refer Maheshwari 6th/e p 168', 'role': 'assistant'}]