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: Surgery
Life span of microfilaria in human blood is 
Select and explain. 
A. 2 Months, B. 3 Months, C. 4 Months, D. 6 Months
B: 3 Months
Answer: B: 3 Months 
Explanation: Life span of micro filaria in human blood is 3 Months.