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': 'Hemolytic uremic syndrome is due to - \nSelect and explain. \nA. Enterotoxigenic E. coli, B. Enterohemorhagic E. coli, C. Shigella, D. Salmonella', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Enterohemorhagic", 'role': 'assistant'}]