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': 'Denominator in general feility rate is ? \nSelect and explain. \nA. All women between 15-45 year age, B. All married women between 15-45 year age, C. Total number of live bihs, D. Total number of all bihs', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., All women between 15-45 yr age", 'role': 'assistant'}]