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
(A/A+C) x 100 in the given table isTest resultPersons with diseasePersons without diseaseTotalPositiveABA+BNegativeCDC + D 
Select and explain. 
A. Specificity, B. Sensitivity, C. PPV, D. NPV
B: Sensitivity
Answer: B: Sensitivity 
Explanation: Ans. is 'b' i.e., Sensitivityo In this that A is true positive and C is false negative.ThusA----A + Cx 100 =True Positive--------------------------True Positive + False Negativex 100 = Sensitivity o Specificity in this question isD (True Negative)--------------------------------D (True Negative) + B (False Positive)xl00