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: Surgery
In MPDS most commonly involved muscle is: 
Select and explain. 
A. Lateral pterygoid., B. Masseter., C. Temporalis., D. Medial pterygoid.
A: Lateral pterygoid.
Answer: A: Lateral pterygoid. 
Explanation: None