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': 'Infant mortality rate does not include \nSelect and explain. \nA. Still births, B. Late neonatal mortality, C. Post neonatal mortality, D. Early neonatal mortality', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]