This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and Family Planning, Subject name: Social & Preventive Medicine
[{'content': 'If a conraceptive has failure rate of 15, how many unplanned pregnancies will the female have in her reproductive period. \nSelect and explain. \nA. 3.5, B. 4, C. 4.5, D. 5', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., 4.5 Failure rate per HWY =Total accidental pregnancies--------------------------Total months of exposurex 1200"A woman\'s reproductive period is roughly from 15 to 45 years, i.e a period of 30 years"------ Park24th/e - 521* Thus,15 =Total accidental pregnancies--------------------------30 x 12x 1200Total accidental pregnancies = 4.5', 'role': 'assistant'}]