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 is define as ? \nSelect and explain. \nA. Incidence of disease among exposed minus incidence of disease among non-exposed, B. Incidence of disease among exposed plus incidence of disease among non-exposed, C. Incidence of disease among exposed divided by incidence of disease among non-exposed, D. None of the above', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Incidence of disease among exposed divided by incidence of disease among non-exposed", 'role': 'assistant'}]