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': 'The mandible grows longer by apposition of new bone on the posterior surface of \nSelect and explain. \nA. Coronoid process, B. Condyle, C. Ramus, D. Symphysis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]