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': 'A patient suffered from bloody diarrhea reported In hospital on laboratory examination lactose positive, Glucose Fermenting, Gram negative rod is isolated, patient infection is most likely due to: \nSelect and explain. \nA. Salmonellae enterica, B. E. Coli, C. Shigella Sonnei, D. H. Pylori', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]