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': 'Which of the following cannot be reliably used for handwashing? \nSelect and explain. \nA. Chlorhexidine, B. Isopropyl alcohol, C. Lysol, D. Cresol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: These can be reliably used for handwashing:\ni. Chlorhexidine (Savlon)\nii. Alcohols (as spirit) - Isopropyl alcohol (preferred), ethyl alcohol\niii. Iodine\niv. Cresol\nv. Chloroxylenol (Dettol)\nvi. Hexachlorophene\nvii. Tincture iodine', 'role': 'assistant'}]