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': 'Diagnostic test for detecting oral precancerous lesion? \nSelect and explain. \nA. High specificity and high sensitivity, B. High specificity and low sensitivity, C. Low specificity and high sensitivity, D. Low specificity and low sensitivity', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]