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': 'According to Frankel behavioral scale, rating 3 stands for: \nSelect and explain. \nA. Definitely positive, B. Positive, C. Negative, D. Definitely negative', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]