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
Jaw or tooth apart swallow is: 
Select and explain. 
A. Infantile swallow., B. Mature swallow., C. Both, D. None.
A: Infantile swallow.
Answer: A: Infantile swallow. 
Explanation: None