This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enterobecteriaceae, 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: Ans. is 'b' i.e. E. Coli Traveller's Diarrhoea is caused by all of the organism given in the Question . But the most common cause of traveller's diarrhoea is Enterotoxigenic strain of E. Coli.Other organisms causeing Traveller's Diarrhoea are:ShigellaSalmonellaYersiniaCampylobacterGiardiaEntamoeba histolytica", 'role': 'assistant'}]