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
Not included in the human poverty index is: 
Select and explain. 
A. % of population not surviving up to 40 yrs age, B. Occupation, C. Underweight for age, D. % population not using safe water supply
B: Occupation
Answer: B: Occupation 
Explanation: None