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
[{'content': 'Depression of the protruded mandible is done by: \nSelect and explain. \nA. Lateral pterygoid, B. Masseter, C. Temporalis, D. Medial pterygoid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Depression of mandible is caused by lateral pterygoid (main), digastric, geniohyoid & mylohyoid.\nElevation of mandible by temporalis, medial pterygoid & masseter.', 'role': 'assistant'}]