This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Microbiology
[{'content': 'Traveller&;s diarrhoea is caused by \nSelect and explain. \nA. Shigella, B. E. Coli, C. E. histolytica, D. Giardiasis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Enterotoxigenic E. Coli causes traveller&;s diarrhoea. Persons travelling from developed countries visiting endemic areas often suffer from ETEC diarrhoea. Ref: Ananthanarayan and Paniker&;s Textbook of Microbiology, 9th edition; pg no: 279', 'role': 'assistant'}]