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': 'High fusing porcelains are used: \nSelect and explain. \nA. For crowns, B. In denture teeth, C. With titanium alloys, D. Over aluminious core porcelain', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]