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: Physiology
[{'content': 'The universal blood recipient group is: \nSelect and explain. \nA. O -Ve, B. O +Ve, C. AB -Ve, D. AB +Ve', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]