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': "True statement about 'total fertility rate' is - \nSelect and explain. \nA. Indicates approximate magnitude of completed family size, B. Numerator is 'woman of child bearing age', C. Numerator is 'all live births', D. Numerator is 'married woman of child bearing age'", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Total fertility rate \n\nTotal fertility rate represents the average number of children, a woman would have if she were to pass through her reproductive years, bearing children at the same rates, as the women now in each age group.\nIt is computed by summing the age specific fertility rates for all ages.\nIt gives the approximate magnitude of the completed family size.\n\nTotal marital fertility rate\n\nAverage number of children that would be born to a married women. If she experiences the current fertility pattern throughout her reproductive span.', 'role': 'assistant'}]