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
Years of life lost to premature death and years lived with disability is known as - 
Select and explain. 
A. HALE, B. DALY's, C. Suullivan's index, D. HDI
A: HALE
Answer: A: HALE 
Explanation: Ans. is 'a' i.e., DALY's