This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other Key Definitions & Concepts, Subject name: Social & Preventive Medicine
The following are Socio-economic indicators Except: 
Select and explain. 
A. Dependency ratio, B. Female literacy rate, C. Number of persons living per room, D. Notification rate
D: Notification rate
Answer: D: Notification rate 
Explanation: Socio economic indicators Housing Family size Literacy rate Availability per capita calorie GNP per capita Growth rate UnEmployment level Dependency ratio