This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': 'Flesh eating bacteria is: \nSelect and explain. \nA. Strep pneumoniae, B. Strep pyogenes, C. Strep agalactiae, D. Streoviridans', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. Strep pyogenesStrep pyogenes is caused flesh eating bacteria as it causes rapidly spreading necrotizing fasciitis due to Strep pyogenes erythrogenic or pyrogenic toxin', 'role': 'assistant'}]