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: Dental
[{'content': 'Over closure of jaws is accentuated muscle activity: \nSelect and explain. \nA. Buccinator, B. Lateral pterygoid, C. Temporalis, D. medial pterygoid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hyperactive mentalis activity and abnormal buccinator activity is seen in class-II division-1 cases.\nOver closure of jaws is associated with accentuated temporatis muscle activity.', 'role': 'assistant'}]