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: Forensic Medicine
[{'content': 'Fatal dose of arsenic trioxide in adults: AIIMS 14 \nSelect and explain. \nA. 20-30 mg, B. 50-60 mg, C. 60-80 mg, D. 120-200 mg', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. 120-200 mg', 'role': 'assistant'}]