This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Screening, Subject name: Social & Preventive Medicine
Sensitivity is 
Select and explain. 
A. True positive\/ true positive + false negative, B. True negative\/ false positive + true negative, C. True negative\/ true negative + false positive, D. True negative\/ false negative + true positive
A: True positive\/ true positive + false negative
Answer: A: True positive\/ true positive + false negative 
Explanation: Repeated question