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
[{'content': 'Early neonatal period is – \nSelect and explain. \nA. 1 day, B. 7 days, C. 28 days, D. 14 days', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]