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': 'What is net reproduction rate? \nSelect and explain. \nA. No. of female children a newborn girl has in her life time taking into account mortality, B. No. of female children a newborn girl has in her life time, C. No. of male children a newborn girl has in her life time, D. No. of children a newborn girl has in her left time', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]