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': 'Small for date baby is - \nSelect and explain. \nA. < 10 percentile for that gestational age, B. < 50 percentile for that gestational age, C. <2000gm, D. <2500 gm', 'role': 'user'}, {'content': 'Answer: A \nExplanation: According to WHO , small for date baby is defined as less than 10th percentile for the gestational age Reference Park&;s textbook of preventive and social medicine 23rd edition pg 536', 'role': 'assistant'}]