This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory infections, Subject name: Pediatrics
[{'content': 'Most common bacteria responsible for the following condition seen in a child who presents with high grade fever and sore throat is? \nSelect and explain. \nA. Group A streptococcus, B. Group B streptococcus, C. Corynebacterium diphtheria, D. Staphylococcus aureus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Enlarged & congested tonsils with palatal petechiae- suggestive of acute pharyngotonsillitis due to Streptococcus pyogenes :group A beta hemolytic streptococcal infection', 'role': 'assistant'}]