This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Transfusion, Subject name: Medicine
[{'content': 'Blood transfusion should be completed within how many hours of initiation- \nSelect and explain. \nA. 4 hours, B. 6 hours, C. 8 hours, D. 12 hours', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a\' i.e., 4 hours o Blood transfusion should be completed in less than 4 hours because of the dangers of bacterial proliferation. which may occur as blood warms to room temperature."One unit of red cells is often given in 1 to 4 hours. Infusion of a unit for longer than 4 hours in not recommended, as there is a risk of bacterial proliferation because the opened unit is at room temperature".Whole blood (stored at 4degC)|||Packed RBCPlatelet Rich Plasmao Stored at 4degCo Use within 20 dayso Stored at room tempo Use within 8-12 hours | ||Platelet concentrateFresh frozen plasmao Stored at room tempo Use within 4 hourso Can be used till one year o Stored at -20degC | ||CryoprecipitateCryosupernetanto Rich in vWF, fibrinogen, factor VIII and fibronectino Can be used till one yearo Has all coagulation and plasma proteins except vWF, fibrinogen, factor VIII and', 'role': 'assistant'}]