This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Screening for Disease, Subject name: Social & Preventive Medicine
[{'content': 'Specificity is related to: \nSelect and explain. \nA. True positive, B. True negative, C. False positive, D. False negative', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' ie true negatives Sensitivity -is defined as the ability of a test to identify correctly those who have the disease that is 'true positives \\Specificity -is defined as the ability of a test to identify correctly those who do not have the disease. That is 'true negatives.9", 'role': 'assistant'}]