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
Successional lamina shows at which stage of enamel organ of deciduous teeth: 
Select and explain. 
A. Cap Stage., B. Bud Stage., C. Appositional Stage., D. Bell Stage.
D: Bell Stage.
Answer: D: Bell Stage. 
Explanation: None