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
In an outbreak of cholera in a village of 2000 population 20 case have occured and 5 have died. Case fatality rate is 
Select and explain. 
A. 1%, B. 0.25%, C. 25%, D. 5%
C: 25%
Answer: C: 25% 
Explanation: Case fatality rate = (Total no. of deaths due to a particular case / Total no. of cases due to the same disease) * 100
Here, CFR = (5/20)*100= 25%