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': 'The following life cycle depicts which parasites: \nSelect and explain. \nA. B. coli, B. E. histolytica, C. A. duodenale, D. E. vermicularis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) E. Histolytica Quadrinucleate cyst suggest E. histolytica.', 'role': 'assistant'}]