This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Newborn Infant - Physical Examination, Subject name: Pediatrics
Newborn loses how much weight in first week? 
Select and explain. 
A. 5-10%, B. 1-2%, C. 10-20%, D. None
A: 5-10%
Answer: A: 5-10% 
Explanation: Ans. is 'a' i.e., 5 -10% Weight loss in neonateso It is expected that newborns will lose some weight in the first 5-7 days of life. A 5% weight loss is considered normal for a formula-fed newborn. A 7-10% loss is considered normal for breastfed babies. Most neonates should regain this lost weight by days 10-14 of life.