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
Hemolytic uremic syndrome is caused by ? 
Select and explain. 
A. EIEC, B. Shigella, C. Salmonella, D. Cholera
B: Shigella
Answer: B: Shigella 
Explanation: Ans. is 'b' i.e., Shigella