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
The overbite-overjet relations of anterior teeth are determined primarily by esthetics and 
Select and explain. 
A. Phonetics, B. Mastication, C. Pouting, D. Modiolus
A: Phonetics
Answer: A: Phonetics 
Explanation: None