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: Social & Preventive Medicine
[{'content': 'As per WHO low birth weight is defined as \nSelect and explain. \nA. Gestational age < 34 weeks, B. Birth weight < 10th percentile, C. Birth weight less than 2.5 kg, D. Gestational age < 28 weeks', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]