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': 'Massive blood transfusion is defined as - \nSelect and explain. \nA. 350 ml in 5 min, B. 500 ml in 5 min, C. 1 Litre in 5 min, D. Whole blood volume', 'role': 'user'}, {'content': "Answer: D \nExplanation: Massive Blood Transfusion is defined as-\nAccording to Sabiston- .\n\ntransfusion greater than patient's total blood volume in 24 hrs\nor as acute administration of more than 10 units of blood over a few hours.\n\nAccording to Schwartz-\nMassive transfusion is a single transfusion of 2500 ml or 5000 ml transfused over a period of 24hrs.", 'role': 'assistant'}]