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': 'The maximum life of a transfused R.B.C. is - \nSelect and explain. \nA. One hour, B. One day, C. 15 days, D. 50 days', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Mean life is around 35 days .', 'role': 'assistant'}]