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: Pathology
Life-span of Neutrophil - 
Select and explain. 
A. 15 days, B. 6 hours, C. 6 days, D. 10 days
B: 6 hours
Answer: B: 6 hours 
Explanation: Ans. is 'b' i.e., 6 hoursLife of granulocyte (Neutrophil) in circulation is normally 4 to 8 hours and another 4 to 5 days in tissues. Also knowLymphocytes may beSho lived ---> Life span 2 weeksLong lived --> Life span upto 3 yearsMonocytes in Circularion -4 1-3 days.Plateletes --> 7-10 days.