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
Screening tests could give high false positives if it satisfies which of the following epidemiologcal parameter? 
Select and explain. 
A. High specificity, B. High sensitivity, C. High prevalence, D. Low prevalence
D: Low prevalence
Answer: D: Low prevalence 
Explanation: More prevalent disease gives less is the number of false positive. Less prevalent disease gives more is the number of false positive. Highly specific screening test gives few false positive. Highly sensitive screening test gives few false negative.