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: Microbiology
[{'content': 'Streptococcus causing rheumatic hea disease is ? \nSelect and explain. \nA. Streptococcus milleri, B. Streptococcus mutans, C. Streptococcus pyogenes, D. Streptococcus equisimilis', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Streptococcus pyogenes", 'role': 'assistant'}]