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 has bih weight - \nSelect and explain. \nA. <10 percentile, B. <50 percentile, C. <60 percentile, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: They weigh kess than 10th percentile for the gestational age.REF.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE.Editon-21.Page no.-494", 'role': 'assistant'}]