This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli), Subject name: Microbiology
[{'content': 'A 3 yr. old child develops bloody diarrhea ,hemorrhagic colitis due to E. coli 0157:H7 is suspected. What medium should be inoculated to help the lab staff make the diagnosis of this infection \nSelect and explain. \nA. TCBS, B. Sorbitol Mac Conkey Agar, C. Modified Thayer Main medium, D. Chocolate agar', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The medium required to make the diagnosis of enterohaemorrhagic E.coli infection is sorbitol MacConkey agar because it does not ferment sorbitol. CULTURE MEDIA ORGANISM TCBS Vibrio cholera Sorbitol MacConkey Agar EHEC Modified Thayer Main medium Neisseria species Chocolate agar Neisseria species and Hemophilus sp.', 'role': 'assistant'}]