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
Age of adolescence: 
Select and explain. 
A. 10-14 years, B. 14-20 years, C. 6-10 years, D. 1-3 years
B: 14-20 years
Answer: B: 14-20 years 
Explanation: Infants (0 to 1 year old)
Toddlers (1 to 3 years old)
Preschoolers (3 to 6 years old)
School-aged children (6 to 12 years old)
Adolescents (12 to 19 years old).