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
Muscle involved in the rotation and protrusion of the mandible 
Select and explain. 
A. Masseter, B. Medial pterygoid, C. Temporalis, D. Digastric
B: Medial pterygoid
Answer: B: Medial pterygoid 
Explanation: None