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
Most common organism causing hemolytic uremic syndrome - 
Select and explain. 
A. Campylobacter, B. Salmonella, C. Enterohemorrhagic E coli, D. Shigella
C: Enterohemorrhagic E coli
Answer: C: Enterohemorrhagic E coli 
Explanation: 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