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
Crown formation of all permenent teeth except third molars is completed between 
Select and explain. 
A. Birth to 8 years, B. Birth to 12 years, C. Birth to 6 years, D. 6 years to 12 years
A: Birth to 8 years
Answer: A: Birth to 8 years 
Explanation: None