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
Which one of the following blood fractions is stored at - 40ºC 
Select and explain. 
A. Cryoprecipitate, B. human albumin, C. Platelet concentrate, D. Packed red cells
A: Cryoprecipitate
Answer: A: Cryoprecipitate 
Explanation: Red Cells

42 days with the appropriate additives
2–6 ºC

Platelets

5 days
20–24 ºC

Cryoprecipitate

12 months
At –25 ºC or below