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 screening method of choice in an area where the prevalence of leprosy is 1/1000 is - 
Select and explain. 
A. Contact survey, B. Group survey, C. Mass survey, D. Any of the above
B: Group survey
Answer: B: Group survey 
Explanation: None