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': 'In which stage of filariasis are microfilaria seen in peripheral blood - \nSelect and explain. \nA. Tropical eosinophilia, B. Early adenolymphagitis stage, C. Late adenolymphangitis stage, D. Elephantiasis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Microfilaria appear in large numbers in peripheral blood at night Blood film should be made at night between 10 pm and 2 am (refer pgno:168 baveja 3rd edition)', 'role': 'assistant'}]