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 ? \nSelect and explain. \nA. Strongyloides, B. Ancylostoma duodenale, C. Necator americanus, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'a' i.e., Strongyloides; 'b' i.e., Ancylostoma duodenale; c i.e., Necator americanas", 'role': 'assistant'}]