This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': 'Which muscleft is the chief mover of the mandible towards the left \nSelect and explain. \nA. Left medial pterygoid, B. Left lateral pterygoid, C. Right medial pterygoid, D. Right lateral pterygoid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The formula method states that the right lateral pterygoid moves the mandible left, whereas the left lateral pterygoid moves the mandible right.', 'role': 'assistant'}]