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
[{'content': 'Extremely low bih weight is defined as weight of an infant below: March 2013 (b, f) \nSelect and explain. \nA. 1000 gm, B. 1200 gm, C. 1500 gm, D. 2500 gm', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. 1000 gm', 'role': 'assistant'}]