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
If the prevalene is very low as compared to the incidence for a disease, it implies - 
Select and explain. 
A. Disease is very fatal and/or easily curable, B. Disease is nonfatal, C. Calculation of prevalence and incidence is wrong, D. Nothing can be said, as they are independent
A: Disease is very fatal and/or easily curable
Answer: A: Disease is very fatal and/or easily curable 
Explanation: Prevalence is less than incidence
1) Disease is very fatal

Most of the cases die, so at the time of calculating prevalence the number is usually less than the incidence.

2) Disease is very well curable either by rapid recovery or by treatment

Most of the cases recover, so at the time of calculating prevalence the number is usually less than incidence.

Prevalence is more than incidence
1) Disease is not fatal but very chronic

Due to increased duration, prevalence increases

2) Treatment prevent death but does not cure

Due to increased duration, prevalence increases.