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: Unknown
[{'content': 'A 23-year-old male presented with abdominal pain and bloody diarrhea of one-week duration. The following rectal mucosa biopsy is diagnostic of infection with - \nSelect and explain. \nA. Giardiasis, B. Amoebiasis, C. Enterobius, D. Severe bacterial infection', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans-B Source of the image- Image Description- Close up of trophozoites of E. histolytica showing the nuclear appearance and erythrophagocytosis.', 'role': 'assistant'}]