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: Microbiology
[{'content': 'Gloves, syringes, needles etc., used for patients whose HIV test results is not known, should be immersed in - \nSelect and explain. \nA. Povidone - iodine 1%, B. Boiling water, C. 1% solution of sodium hypochlorite, D. None', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'None' . For contaminated medical instruments 2 % solution of glutaraldehyde is used.", 'role': 'assistant'}]