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: Dental
[{'content': 'Hydroxyl ions are highly oxidizing free radicals that destroy bacteria by: \nSelect and explain. \nA. Damaging the cytoplasmic membrane, B. Protein denaturation, C. Damaging bacterial DNA, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The release of hydroxyl ions in an aqueous environment is related to the antimicrobial property. Hydroxyl ions are highly oxidizing free radicals that destroy bacteria by:\n\nDamaging the cytoplasmic membrane\nProtein denaturation\nDamaging bacterial DNA', 'role': 'assistant'}]