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
In which stage of filariasis are microfilaria seen in peripheral blood - 
Select and explain. 
A. Tropical eosinophilia, B. Early adenolymphagitis stage, C. Late adenolymphangitis stage, D. Elephantiasis
B: Early adenolymphagitis stage
Answer: B: Early adenolymphagitis stage 
Explanation: 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)