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': "Specificity; All are true except: \nSelect and explain. \nA. Identifies those who don't have the disease, B. Increased specificity decreases false positive, C. ELISA is more sensitive, while western blot is more specific, D. Identifies true positive", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]