A cohort study examining the effect of chewing tobacco on the risk of oral cancer found that the risk ratio was 5.0 and the risk difference was 0.002. Based on this information, answer questions 24 and 25. 24. Which of the above measures can be used to make a causal association from an individual's risk standpoint? Is the individual's risk association due to the exposure high in the given context? 25. Which of the above measures can be used public health impact of the risk factor on the outcome? Is the public health burden of the disease high due to chewing tobacco in the given context