This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'General fertility rate: \nSelect and explain. \nA. Average number of children born to a women in her reproductive life span, B. Annual number of live births per 1000 married women during reproductive age, C. Total number of girl child born to a female, D. Total number of boy child born to a female', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. (b) Annual number of live births per 1000 married women during reproductive ageRef: Park's 21sted. /451* General fertility rate is the annual number of live births per 1000 married women of child bearing age (15-49 years).* Total fertility rate average number of children born to a women in her reproductive life span.* Gross reproduction rate is total number of girl children born to a female. It is half of the TFR.* Net reproduction rate is total number of girl children born to a female, taking into account their mortality.", 'role': 'assistant'}]