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
Infant mortality rate does not include 
Select and explain. 
A. Still births, B. Late neonatal mortality, C. Post neonatal mortality, D. Early neonatal mortality
A: Still births
Answer: A: Still births 
Explanation: None