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': 'Still bih rate includes babies dead after - \nSelect and explain. \nA. 20 weeks, B. 24 weeks, C. 28 weeks, D. 32 weeks', 'role': 'user'}, {'content': "Answer: C \nExplanation: Park's textbook of preventive and social medicine 23rd edition. * Still bih is death of a foetus weighing 1000g or more and this is equivalent to 28 weeks of gestation or more.", 'role': 'assistant'}]