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
Old age dependent population includes population above the age of: 
Select and explain. 
A. 53 years, B. 55 years, C. 65 years, D. 68 years
C: 65 years
Answer: C: 65 years 
Explanation: The population with age more than 65 years is considered to be dependent on the economically productive age group and is considered to be the old age dependent population. Ref: Park, 22nd edition pg: 444