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': 'For international comparison stillbih is applied to fetus weighing more than \nSelect and explain. \nA. 1000 gms, B. 1500 gms, C. 700 gms, D. 2800 gms', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ref:Park's Text book of Preventive and Social Medicine 25th ed", 'role': 'assistant'}]