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
Depression of the protruded mandible is done by: 
Select and explain. 
A. Lateral pterygoid, B. Masseter, C. Temporalis, D. Medial pterygoid
A: Lateral pterygoid
Answer: A: Lateral pterygoid 
Explanation: Depression of mandible is caused by lateral pterygoid (main), digastric, geniohyoid & mylohyoid.
Elevation of mandible by temporalis, medial pterygoid & masseter.