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: Social & Preventive Medicine
The ability of a screening test to detect "true positives" is known as - 
Select and explain. 
A. Sensitivity, B. Specificity, C. Positive predictive value, D. Negative predictive value
A: Sensitivity
Answer: A: Sensitivity 
Explanation: None