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
Massive blood transfusion is defined as - 
Select and explain. 
A. 350 ml in 5 min, B. 500 ml in 5 min, C. 1 Litre in 5 min, D. Whole blood volume
D: Whole blood volume
Answer: D: Whole blood volume 
Explanation: Massive Blood Transfusion is defined as-
According to Sabiston- .

transfusion greater than patient's total blood volume in 24 hrs
or as acute administration of more than 10 units of blood over a few hours.

According to Schwartz-
Massive transfusion is a single transfusion of 2500 ml or 5000 ml transfused over a period of 24hrs.