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
[{'content': 'In a ceain population, there were 4050 bihs in last one year. There were 50 still bihs. 50 infants died within 7 days where as 150 died within 28 days. What is the neonatal moality rate- \nSelect and explain. \nA. 50, B. 62.5, C. 12.5, D. 49.4', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 50 Neonatal deaths are deaths occurring during the neonatal period, commencing at bih and ending 28 completed days after bih. Neonatal moality rate is the number of neonatal deaths in a given year per 1000 live bihs in that year.", 'role': 'assistant'}]