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: Medicine
[{'content': 'All the following are complications of massive blood transfusion except \nSelect and explain. \nA. Hyperkalemia, B. Hypothermia, C. Hypomagnesemia, D. Hypercalcemia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Massive blood transfusion causes Hypocalcemia due to citrate.', 'role': 'assistant'}]