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': 'If dentures are cleaned in boiling water they: \nSelect and explain. \nA. Become sticky, B. Warp, C. Melt, D. Galvanize', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]