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': 'Electric pulp test for an immature tooth is: \nSelect and explain. \nA. Positive, B. Negative, C. False-Positive, D. False-negative', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]