In a prospective cohort study, 3,850 women aged 40-79 were followed for 10 years to estimate the risk of developing COPD with e-cigarette use. Data from the study are summarized below, stratified on use of e-cigarettes. COPD No COPD Total E-cigarettes use 60 405 465 Negative for e-cigarette use 120 3,265 3,385 Total 180 3,670 3,850 2. What is the risk ratio for COPD among users and non-users of e-cigarettes? 3. What is the disease odds ratio for COPD among users and non-users of e-cigarettes?