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
[{'content': 'Common reaction to blood transfusion may include all\nexcept: \nSelect and explain. \nA. Fever, B. Hypocalcemia, C. Hemolysis, D. Urticaria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]