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': 'Transfusing blood after prolonged storage could lead to - \nSelect and explain. \nA. Citrate intoxication, B. Potassium intoxication, C. Circulatory overload, D. Haemorrhagic diathesis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]