Which of the following is the estimated ratio of the odds of disease in the exposed versus unexposed groups?

Which of the following is the estimated ratio of the odds of disease in the exposed versus unexposed groups?   

Which of the following is the estimated ratio of the odds of disease in the exposed versus unexposed groups? —— Not exposed—_EEE—EE- N0 disease Total (50 / 4501=+ (50 I 5,050}(50 / 503=+ (400 I 5,000)(50 / 5,050)=+ (50 f 450)(50 / 5,400}=+ (50/ 100) mpg-5n