Suppose a study estimates the relative risk of disease for those persons with a binary condition compared to persons without the condition to be 3.1, with a 95% CI of 2.4 to 5.3. Suppose you wish to report the results in the opposite direction, ie for those without the condition compared to those with the condition. What would the endpoints of the 95% for the relative risk be for thise direction of comparison?

a. (2.4, 5.3)

b. (-5.3, -2.4)

c. (0.19, 0.42)

d. (-0.42, -0.19)