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 Wharfe assessment of impacted third molars, "A" stands for: \nSelect and explain. \nA. Axis of rotation, B. Application of elevator, C. Amber line, D. Angulation of 3rd molar', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]