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: Pediatrics
Low bih weight is defined as - 
Select and explain. 
A. Weight < 2.5 kg, B. Weight < 2.0 kg, C. Weight < 1.5 kg, D. Weight < 10 percentile for their gastational age
A: Weight < 2.5 kg
Answer: A: Weight < 2.5 kg 
Explanation: Ans. is 'a' i.e., Weight < 2.5 kg