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': 'Most common organism causing hemolytic uremic syndrome - \nSelect and explain. \nA. Campylobacter, B. Salmonella, C. Enterohemorrhagic E coli, D. Shigella', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Enterohemorrhagic E coli Hemolytic uremic syndrome is caused by -* Enterohemorrhagic E.coli (EHEC) - M.C.* Shigella dysenteriae type 1* Campylobacter* Salmonella* Drugs - Cyclosporine, Clopidogrel and Quinine", 'role': 'assistant'}]