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': 'Cells of the stratum intermedium secretes: \nSelect and explain. \nA. Hyaluronic acid., B. Acid phosphatase., C. Alkaline phosphatase., D. All of the above.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Stratum intermedium - cells show unusually high activity of alkaline phosphatase, which is essential for amelogenesis. Also demonstrates high level of amino peptidase during dentinogenesis.', 'role': 'assistant'}]