In a ceain population, there were 4050 bihs in the last one year. There were 50 still bihs, 50 infants died within 7 days whereas 150 died within the first 28 days. What is the neonatal moality rate: (A) 50, (B) 62.5, (C) 12.5, (D) 49.4
Answer is A. Ans. a. 50