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
[{'content': 'Relative risk 2 means ? \nSelect and explain. \nA. Risk of developing disease is 2 times higher among nonexposed, B. 30% of disease among exposed is due to risk facter, C. 200% increase in risk of developing disease among exposed, D. Incidence rate is 2 times higher in exposed group than non-exposed', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Incidence rate is 2 times higher in exposed group than non-exposed It is very impoant to know the difference between relative risk and attributable risk.", 'role': 'assistant'}]