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
On massive blood transfusion the following complication occurs- 
Select and explain. 
A. Respiratory acidosis, B. Metabolic acidosis, C. Metabolic alkalosis, D. Respiratory alkalosis
C: Metabolic alkalosis
Answer: C: Metabolic alkalosis 
Explanation: Answer- C. Metabolic alkalosisBanked blood has a pH of 6.8 and is acidotic.After massive transfusion citrate in the stored blood is conveed into bicarbonate resulting in metabolic alkalosis.Other complications are-HypokalemiaHypothermiaHypocalcemiaRef: Transfusion Medicine and Hemostasis: Clinical and Laboratory Aspects By Christopher D. Hillye, Page 291 ; Yao and Ausio's Anesthesiology: Problem-Oriented Patient Management By Fun-Sun F. Yao, 6th Edition, Page 1148