This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Obstetrics, Paediatrics and Geriatrics, Subject name: Social & Preventive Medicine
Preterm babies: 
Select and explain. 
A. Bom before 37 weeks of gestations, B. Bom before 38 weeks of gestations, C. Bom before 39 weeks of gestations, D. Bom before 40 weeks of gestations
A: Bom before 37 weeks of gestations
Answer: A: Bom before 37 weeks of gestations 
Explanation: (Born before 37 weeks of gestations): Ref: (460-Park 20th)1. Preterm babies - babies bom too early before 37 weeks of gestations (259 days)2. Small for date (SFD) babies - bom at term or preterm. They weight less than the 10th percentile for the gestational age.3. Term: babies bom from 37 completed weeks to less than 42 completed weeks (259 to 293 days) of gestations4. Post term: - Babies bom at 42 completed weeks or anytime thereafter (294 days and over) of gestation