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
When prevalance increases, which of the following may be decreased- 
Select and explain. 
A. Incidence, B. Duration, C. Death rate, D. None
C: Death rate
Answer: C: Death rate 
Explanation: Ans. is `c' i.e., Death rate o Decreases in death rate may increase in prevalance because of prolongation of life in chronic disease. o Decreases in incidence or duration, causes decrease in prevalance