This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Man is a definitive host of which parasite ? 
Select and explain. 
A. Malaria, B. Filaria, C. Measles, D. All
B: Filaria
Answer: B: Filaria 
Explanation: Ans. is 'b' Filaria