This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'In some kidney transplants Hyperacute graft rejection is seen . It is due to \nSelect and explain. \nA. B lymphocytes, B. T cells, C. CD+4 cells, D. Preformed antibodies', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref - Bailey and love 25 e p1410', 'role': 'assistant'}]