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': 'Ameloblast is \nSelect and explain. \nA. A cell from which tooth enamel is formed, B. A tissue from which tooth erupts, C. A tumour of the jaw, D. Pertaining to dentin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]