This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health Programmes in India, Subject name: Social & Preventive Medicine
According to RNTCP, population covered by one tubercular unit - 
Select and explain. 
A. 50000, B. 100000, C. 500000, D. 1000000
C: 500000
Answer: C: 500000 
Explanation: Ans. is 'c' i.e., 500000Infrastructure in RNTCPOne microscopy center100.000 population in planes50.000 population in hilly/mountain areasOne Tuberculosis unit500.000 population in planes250.000 population in hilly/tribal areasOne district tubercular center (DTC)Per revenue districtOne state drug store (SDS)50 million populationOne senior TB laboratory supervisor (STLS)Every 5 microscopy centers (5 lac population)