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: Anatomy
Passavant's ridges is formed by 
Select and explain. 
A. Palatopharyngeus muscle, B. Palatoglossus muscle, C. Stylopharageus muscle, D. Buccinator muscle
A: Palatopharyngeus muscle
Answer: A: Palatopharyngeus muscle 
Explanation: None