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
Extremely low birth weight - 
Select and explain. 
A. <1000, B. <1500, C. <2500, D. <2800
A: <1000
Answer: A: <1000 
Explanation: Ans. (a) <1000 gmRef : OP Ghai 8th ed./125* Normal birth weight - 2800 gm- 3000gm* Low birth weight(LBW) - < 2500 gm* Very low birth weight(VLBW) - < 1500 gm* Extremely low birth weight (ELBW) - < 1000 gm.