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': 'High FMA angle indicates \nSelect and explain. \nA. Good prognosis, B. Bad prognosis, C. Good bone growth, D. Class III relation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]