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: Social & Preventive Medicine
[{'content': 'Net reproduction rate is : \nSelect and explain. \nA. Number of girl babies born to a women, B. Number of babies born to a women, C. Number of girl babies born to a women and  taking into account only alive once, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Total Fertility Rate(TFR) : Number of babies born to a woman\nGross Fertility Rate(GFR) : Number of girl babies born to a woman\nNet reproduction rate(NRR) : Number of girl babies born to a woman and taking into account only alive once.', 'role': 'assistant'}]