This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: obstetrics,pediatrics and geriatrics, Subject name: Social & Preventive Medicine
[{'content': 'Low-bih weight baby is the one with bih weight is less than - \nSelect and explain. \nA. 1000 grams, B. 1500 grams, C. 2000 grams, D. 2500 grams', 'role': 'user'}, {'content': "Answer: D \nExplanation: A low bih wright infant is any infant with a bih weight less than 2.5kg regardless of gestational age.REF.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE.Editon-21.Page no.-494", 'role': 'assistant'}]