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': 'Dispersion of crystalline phase to strengthen ceramics results in \nSelect and explain. \nA. dispersed porcelain, B. glazed porcelain, C. aluminium porcelain, D. all of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]