This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid, Electrolyte and Nutrition, Subject name: Surgery
All of the following are true about transfusion protocol except: 
Select and explain. 
A. BT should commence within 60 minutes of removing blood bag from refrigerators, B. Whole blood or packed RBC transfusion must be completed within 4 hours, C. Transfusion set should have standard filter of 170 mm size, D. Usual transfusion needle size should be of 18-19 gauge
A: BT should commence within 60 minutes of removing blood bag from refrigerators
Answer: A: BT should commence within 60 minutes of removing blood bag from refrigerators 
Explanation: TRANSFUSION PROTOCOLS - BT should commence within 30 minutes of removing blood bag from refrigerators because of increased risk of bacteria contamination. - Whole blood or packed RBC transfusion must be completed within 4 hours. - Platelet and FFP transfusion should be completed within 20 mintues - Transfusion set should have standard filter of 170 mm size -Usual transfusion needle size should be of 18-19 gauge.