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': 'Total fertility rate -a) Total no. of children born to a woman in a given yearb) Measure of completed family sizec) Sum of fertility of all aged) No. of female child born to mothere) Total no. of child born to mother \nSelect and explain. \nA. a, B. c, C. bc, D. ad', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]