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
[{'content': 'Which one of the following blood fractions is stored at - 40ºC \nSelect and explain. \nA. Cryoprecipitate, B. human albumin, C. Platelet concentrate, D. Packed red cells', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Red Cells\n\n42\xa0days with the appropriate additives\n2–6 ºC\n\nPlatelets\n\n5 days\n20–24 ºC\n\nCryoprecipitate\n\n12 months\nAt –25 ºC or below', 'role': 'assistant'}]