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: Surgery
[{'content': 'A fractured mandibular condyle is displaced forward and medially by the action of the following muscle: \nSelect and explain. \nA. Temporalis, B. External pterygoid, C. Internal pterygoid, D. Masseter', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]