This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Impoant Bacterial Diseases in Children, Subject name: Pediatrics
[{'content': 'Most common cause of acute otitis media in children is: \nSelect and explain. \nA. Strep pneumoniae, B. Strep pyogenes, C. Staph aureus, D. Pseudomonas', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 3 pathogens predominate in Acute Otitis Media: Strepto pneumoniae, H. influenzae & Moraxella catarrhalis.', 'role': 'assistant'}]