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
Early Bell stage differ from advanced Bell stage: 
Select and explain. 
A. Morphodifferentiation occurs in Early Bell stage and Histodifferentiationoccurs in advanced Bell stage., B. Morphodifferentiation occurs in advanced Bell stage and Histodifferentiation occurs in Early Bell stage., C. Different in Apposition., D. None.
B: Morphodifferentiation occurs in advanced Bell stage and Histodifferentiation occurs in Early Bell stage.
Answer: B: Morphodifferentiation occurs in advanced Bell stage and Histodifferentiation occurs in Early Bell stage. 
Explanation: These are developmental stages of tooth.
Histodifferentiation occurs in early bell stage white morphodifferentiation occurs in advanced bell stage.