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': 'Enamel tufts are \nSelect and explain. \nA. Thin tuft like structure extending from enamel surface to dentin-enamel junction, B. Tuft like structure arising from dentin-enamel junction towards enamel surface, C. Odontoblastic processes extending into enamel, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]