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: Gynaecology & Obstetrics
[{'content': 'Low bih weight baby is defined as baby weighing: September 2006 \nSelect and explain. \nA. 1000 gm, B. 1500 gm, C. 2000 gm, D. 2500 gm', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D: 2500 gm Low bih weight (LBW) is defined as a fetus that weighs less than 2500 g (5 lb 8 oz) regardless of gestational age. Other definitions include Very Low Bih Weight (VLBW) which is less than 1500 g, and Extremely Low Bih Weight (ELBW) which is less than 1000 g. Normal Weight at term delivery is 2500 g - 4200 g. SGA is not a synonym of LBW, VLBW or ELBW. Small for gestational age (SGA) babies are those whose bih weight, length, or head circumference lies below the 10th percentile for that gestational age', 'role': 'assistant'}]