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
If the objective of the investigator is to assess the incidence of tuberculosis infection in a community, the most appropriate methodology would be to 
Select and explain. 
A. Identify all individuals with positive tuberculin test, B. Identify new converters to Tuberculin test, C. Perform sputum examination of chest symptomatics, D. Screen all under-five children with Tuberculin test
B: Identify new converters to Tuberculin test
Answer: B: Identify new converters to Tuberculin test 
Explanation: None