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
Specificity of a test refers to its ability to detect- 
Select and explain. 
A. True positive, B. True negatives, C. False negatives, D. False positive
B: True negatives
Answer: B: True negatives 
Explanation: 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