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
You are a doctor. You visit a village and want to make a quick estimate of the infant population of the area. Which of the following measures can you use? 
Select and explain. 
A. No. of TT injections in last one year, B. No. of folifer tablets consumed in one year, C. Female population in reproductive age group, D. Literacy rate
B: No. of folifer tablets consumed in one year
Answer: B: No. of folifer tablets consumed in one year 
Explanation: .healthy ifants would have been born to mothers who had a regular antenatal visits as well as followups.so by obtaining an estimate of total number of folifer tablets consumed at that area during a given period indirectly helps in the calculation of number of infants born to that area.