This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: parasitology, Subject name: Microbiology
[{'content': 'Which of the following helminth produces bile stained eggs? \nSelect and explain. \nA. Ancylostoma duodenale, B. Taenia solium, C. Enterobius vermicularis, D. Necator americanus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Bile stained eggs trichuris trichura ascaris lumbricoides taenia solium &saginata Non bile stained eggs ancylostoma duodenale Hymenolepis nana enterobius vermicularis necator americanus', 'role': 'assistant'}]