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
Effective literacy rate is calculated from 
Select and explain. 
A. Those who have completed 15 year schooling, B. Those who have completed 10 year schooling, C. Those above age of 7 years, D. Total population
C: Those above age of 7 years
Answer: C: Those above age of 7 years 
Explanation: None