This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2019, Subject name: Pathology
Which of the following is the complication of massive blood transfusion? 
Select and explain. 
A. Metabolic acidosis, B. Metabolic alkalosis, C. Respiratory alkalosis, D. Respiratory acidosis
B: Metabolic alkalosis
Answer: B: Metabolic alkalosis 
Explanation: Transfused blood contains chemical known as citrate and the liver conves this citrate into bicarbonate . High amount of bicarbonate in body leads to metabolic alkalosis