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
Coho study reveals all except: 
Select and explain. 
A. Incidence, B. Attributable risk, C. Relative risk, D. Odds ratio
D: Odds ratio
Answer: D: Odds ratio 
Explanation: Odds ratio