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': 'Synthesis of enamel matrix proteins occurs in the \nSelect and explain. \nA. Outer enamel epithelium, B. Ameloblast, C. Stratum intermedium, D. Stratum granulosum', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]