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: Pediatrics
Early neonatal period is - 
Select and explain. 
A. 1 day, B. 7 days, C. 28 days, D. 14 days
B: 7 days
Answer: B: 7 days 
Explanation: Ans. is 'b' i.e., 7 days