In a clinical trial of 2106 subjects treated with a certain drug, 25 reported headaches. In a control group of 1613 subjects given a placebo, 22 reported headaches. Denoting the proportion of headaches in the treatment group by p and denoting the proportion of headaches in the control (placebo) group by pc, the relative risk is p/pc. The relative risk is a measure of the strength of the effect of the drug treatment. Another such measure is the odds ratio, which is the ratio of the odds in favor of a Pt/ (1-Pt) Pc (1-Pc) headache for the treatment group to the odds in favor of a headache for the control (placebo) group, found ating The relative risk and odds ratios are commonly used in medicine and epidemiological studies. Find the relative risk and odds ratio for the headache data. What do the results suggest about the risk of a headache from the drug treatment? Find the relative risk for the headache data. The relative risk = (Round to three decimal places as needed.) Find the odds ratio for the headache data. The odds ratio = (Round to three decimal places as needed.) What do the results suggest about the risk of a headache from the drug treatment? OA. The drug appears to pose a risk of headaches because the odds ratio is greater than 1.0. B. The drug does not appear to pose a risk of headaches because pt is slightly less than pc- OC. The drug has no risk because the relative risk and odds ratio are almost equal. D. The drug appears to pose a risk of headaches because pt is greater than pc.