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 dislocation of the jaw, displacement of the
articular disc beyond the articular tubercle of the temporomandibular joint results from spasm or excessive contraction of the following muscle? 
Select and explain. 
A. Buccinator, B. Lateral pterygoid, C. Masseter, D. Temporalis
B: Lateral pterygoid
Answer: B: Lateral pterygoid 
Explanation: None