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
Distolingual extension of the mandibular impression for 
a complete denture is limited by the action of: 
Select and explain. 
A. Stylohyoid muscle, B. Medial pterygoid muscle, C. Lateral pterygoid muscle, D. Superior constrictor muscle
D: Superior constrictor muscle
Answer: D: Superior constrictor muscle 
Explanation: None