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': "Reflex not involved in Harvard's criteria \nSelect and explain. \nA. Gag reflex, B. Grimace reflex, C. Oculocephalic reflex, D. Tendon reflex", 'role': 'user'}, {'content': "Answer: D \nExplanation: Harvard's criteria: ventilator is put off for 10 minutes and following responses are noted. Spontaneous respiration Spontaneous circulation Pupillary reflex. Corneal reflex Ocular reflex- oculocephalic and oculovestibular Grimace reflex Gag reflex Flat EEG Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 17", 'role': 'assistant'}]