This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
[{'content': 'ova form in stool is not diagnostic in \nSelect and explain. \nA. strongyloides, B. ancylostoma, C. ascaris lumbricoides, D. nector americanus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: strongyloides is oviviviparous hence eggs hatch immediately to produce rhabditi form larva which is the diagnostic form in stool ref : paniker 8th ed', 'role': 'assistant'}]