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': 'Which of the cephalometric parameter is used to diagnose a long face syndrome patient? \nSelect and explain. \nA. ANB angle, B. SNA angle, C. Jaraback ratio, D. Saddle angle', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]