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': 'Nigh guard vital bleaching is done using \nSelect and explain. \nA. Using McInne’s solution, B. H2O2 activated with thermo/Photo catalytic technique, C. Na Perborate and H2O2, D. 10-16% carbamide peroxide', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]