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': 'Composite placement should be done after how many days of bleaching: \nSelect and explain. \nA. 1 hour., B. 24hours., C. 1week., D. 1month.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In bleached tooth minimum waiting time before composite\xa0placement = 1 to 2 week\nIn bleached tooth minimum waiting time in extensive\xa0composite restoration & long bleaching cases = 6 weeks', 'role': 'assistant'}]