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 gonial angle at birth is? \nSelect and explain. \nA. 110°, B. 115°, C. 175°, D. 145°', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]