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': 'In a patient with class III facial profile one would think of which type of genioplasty \nSelect and explain. \nA. Reduction genioplasty, B. Advancement genioplasty, C. Straightening genioplasty, D. Rotational genioplasty', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]