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: Unknown
[{'content': 'In a certain population, there were 4050 births in the last one year. There were 50 still births. 50 infants died within 7 days where as 150 died within 28 days. What is the Neonatal mortality rate? \nSelect and explain. \nA. 50, B. 62.5, C. 12.5, D. 49.4', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Total number of births in one year = 4050\nNo. of still births in that year = 50\nHence, total number of live births in that year would be\n4050 – 50\n4000\nTotal number of infants dying in the first 7 days = 50 Total number of infants dying in the next 21 days = 150\nHence, total number of infants dying in the first 28 days of birth\n= 50 + 150 Now,\nNeonatal mortality rate = 50', 'role': 'assistant'}]