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': 'DEC provocation test is done in: \nSelect and explain. \nA. Filariasis, B. Strongyloidiasis, C. Taeniasis, D. Trichuriasis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. FilariasisDEC provocation test is done to detect microfilaria in blood anytime which are otherwise seen after 10 pm in the night.', 'role': 'assistant'}]