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': 'Small for gestational age infants are defined as _______ \nSelect and explain. \nA. Birth weight of child < 3rd percentile for gestational age, B. Birth weight of a child < 10th Percentile for gestational age, C. Birth weight of a child < 15th percentile for gestational age, D. Birth weight of a child < 25th percentile for gestational age.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Small for gestational age (SGA)\n\tBirth weight < 10th percentile for gestational age\nAppropriate for gestational age (AGA)\n\tBirth weight 10th - 90th percentile for gestational age\nLarge for gestational age (LGA)\n\tBirht weight > 90th percentile for gestational age.', 'role': 'assistant'}]