This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Death and Medicolegal Aspects, Subject name: Forensic Medicine
[{'content': 'For how long in cremation, 900-1000degC is used: \nSelect and explain. \nA. 30 min, B. 1 hr, C. 2 hr, D. 3 hr', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: a (30 min)In cremation 900-1000degC is used for at least 30 min.', 'role': 'assistant'}]