This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
A woman is exposed to multiple sex paners has 5 times increased risk for carcinoma cervix. The attributable risk is - 
Select and explain. 
A. 20%, B. 50%, C. 80%, D. 100%
C: 80%
Answer: C: 80% 
Explanation: Attributable risk=100 (refer pgno 78 park 23rd edition)