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
Most impoant factor for a test to be a good screening test is ? 
Select and explain. 
A. Specificity, B. Sensitivity, C. Reliability, D. Predictive value
B: Sensitivity
Answer: B: Sensitivity 
Explanation: Ref : Parks 23rd edition pg 138 An ideal screening test should have 100 % sensitivity.