This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Death and postmortem changes, Subject name: Forensic Medicine
[{'content': '&;BEATING HEA DONOR&; refers to \nSelect and explain. \nA. Molecular death, B. Vegetative state, C. Cerebral death, D. Brain stem death', 'role': 'user'}, {'content': 'Answer: D \nExplanation: THE BEATING-HEA DONOR: After brain stem death has been established, the retention of the patient on the ventilator facilitates a fully oxygenated cadaver transplant, the so-called "beating-hea donor". The results of the transplant are much improved. This has no legal sanction. Ref:- k s narayan reddy; pg num:-136', 'role': 'assistant'}]