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
For a given population, minimum no. of newborns to be examined for calculating percentage of LBW babies is 
Select and explain. 
A. 100 babies, B. 1000 babies, C. 500 babies, D. 10,000 babies
C: 500 babies
Answer: C: 500 babies 
Explanation: LBW is regardless of gestational age.
Depending on the population, the percentage of LBW be based on measurements of atleast 500 babies.
Goal for LBW in National Health Policy 1983: Reduce LBW to <10% by 2000.