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': 'True about E. coil is - \nSelect and explain. \nA. Sereny test is done to diagnose Enterotoxigenic E.coli (ETEC), B. Enteropathogenic E. coli (EPEC) are also enteroinvasive, C. UTI is caused by single serotype at a time usually, D. E. coli is the most common causative organism to infect burn wounds', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]