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': 'Larval form in stool is found in -a) Strongyloidesb) Ancylostoma duodenalec) Ascaris lumbricoidesd) Necator americanuse) Trichura \nSelect and explain. \nA. acd, B. bcd, C. abd, D. ab', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Strongyloides is ovo-vivparous, hence larva found in stool.\n\xa0If passed feces is allowed to stand for several hours, the Rhabditiform larvae of Ancylostoma duodenale and Necator\xa0americanus will hatch out and even they can be seen while performing stool examination.', 'role': 'assistant'}]