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
Perinatal period is defined as – 
Select and explain. 
A. From 20 week of gestation to birth, B. From 28 week of gestation to birth, C. From 28 week of gestation to one week after birth, D. From birth to one month after birth
C: From 28 week of gestation to one week after birth
Answer: C: From 28 week of gestation to one week after birth 
Explanation: Perinatal period includes : (i) Late fetal period (from 28th week gestation onwards) and (ii) Early neonatal period (1st week of life).