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': 'Gonion, menton and pogonion are located on \nSelect and explain. \nA. Midline landmarks, B. Mandible, C. Maxilla, D. Skeletal profile', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]