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': 'All the following amoebae live in the large intestine except- \nSelect and explain. \nA. E.coli, B. E. nana, C. E.gingivalis, D. Iodamoeba butschlii', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]