This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New born infants, Subject name: Pediatrics
[{'content': 'Neonatal period extends upto \nSelect and explain. \nA. 21 days of life, B. 30 days of life, C. 28 days of life, D. 35 days of life', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Neonatal period extends from bih to <28 days (under 4 wks) of age. First week of life(<7days or <168 hrs) is known as early neonatal period. Late neonatal period extends from 7th day to <28th day. Reference : page 124 Ghai Essential Pediatrics 8th edition', 'role': 'assistant'}]