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': 'Sputum examination is not useful in diagnosis of - \nSelect and explain. \nA. Trichuris trichura, B. Ank. Duodenale, C. Paragonimiasis, D. Strongyloides', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Diagnosis of trichuris trichura The characteristic eggs are found in stools. The degree of infection can be assessedby egg counts in all other cases sputum examination is beneficial paragonimus westermani-lung fluke', 'role': 'assistant'}]