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
Recording posterior palatal seal is important for : 
Select and explain. 
A. Retention of the denture., B. Stability of the denture., C. Support of the denture., D. All of the above.
A: Retention of the denture.
Answer: A: Retention of the denture. 
Explanation: None