This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
[{'content': "Calculation of infant moality rate doesn't include - \nSelect and explain. \nA. Stillbih, B. Early neonatal deaths, C. Late neonatal deaths, D. Post neonatal deaths", 'role': 'user'}, {'content': 'Answer: A \nExplanation: infant moality rate is defined as the ratio of infant death registered in a given year to the total no of live bih registered in the same year usually expressed as a rate per 1000 live bih.', 'role': 'assistant'}]