In the 2 X 2 contingency tables below, the data from a German study investigating the relationship between smoking status and invasive cervical cancer have been stratified by the number of sexual partners that a woman has had Zero or One Partner Smoker Cancer Yes No Total Yes 12 25 37 No 21 118 139 Total 33 143 176 Two or More Partners Smoker Cancer Yes No Total Yes 96 92 188 No 142 150 292 Total 238 242 480 Within each stratum, are the odds of being diagnosed with cervical cancer higher for women who smoke or for those who do not smoke? Hint: Choose the best one. O a. Within each stratum, the odds of being diagnosed with cervical cancer are higher for women who smoke. The difference appear to be greater for women who have had at most one sexual partner. O b. Within each stratum, the odds of being diagnosed with cervical cancer are higher for women who smoke. O c. Within each stratum, the odds of being diagnosed with cervical cancer are the same for women who smoke and who do not smoke. O d. Within each stratum, the odds of being diagnosed with cervical cancer are higher for women who do not smoke