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': 'Neonatal period is - \nSelect and explain. \nA. Upto 1 year of life, B. Upto 28 days of life, C. 28 days to 1 year of life, D. First 7 days of life', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Upto 28 days of life Childhood o Infancy upto 1 year A) Neonatal --> First 28 days of life a) Early neonatal -9 First 7 days of life b) Late neonatal -4 7 days of 28 days of life B) Post neonatal --> 28 days to 1 year o Pre-school 1-4 years o School age --> 5-14 years Perinatal period --) Period from 28th week of gestation to the seventh day after bih.", 'role': 'assistant'}]