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: Physiology
Lifespan of platelets and neutrophils is respectively 
Select and explain. 
A. 8-9 days and 5 days, B. 120 days and 5 days, C. 5 days and 120 days, D. 5 days and 8-9 days
A: 8-9 days and 5 days
Answer: A: 8-9 days and 5 days 
Explanation: Erythrocytes 120 days
Platelets 8-9 days
Neutrophils 5 days