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 of a test refers to its ability to detect- \nSelect and explain. \nA. True positive, B. True negatives, C. False negatives, D. False positive', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., True negative Sensitivity* It is the ability of a test to identify correctly all those who have the disease, i.e., true positive.Specificity* It is the ability of a test to identify correctly those who do not have the disease i.e., true negative", 'role': 'assistant'}]