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
Nutrition for ameloblast, immediately at the beginning of dentinogenesis occurs in 
Select and explain. 
A. Stellate reticulum, B. Dental Papilla, C. Dental sac, D. None of the above
A: Stellate reticulum
Answer: A: Stellate reticulum 
Explanation: None