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': 'After dentinogenesis nutrition of ameloblast is derived from \nSelect and explain. \nA. Stellate reticulum, B. Dental Papilla, C. Dental sac, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]