Which is the correct one?

Question 9 1 pts A classic British study on smoking and mortality investigated the effect of smoking on coronary death rates (measured as deaths per 100,000 person-years). Assume the data have been arranged in a data frame with variables person.years, deaths, age.group and smokers. person.years deaths smokers age.group 18793 2 No 35-44 52407 32 Yes 35-44 10673 12 No 45-54 4 43248 104 Yes 45-54 5 5710 28 No 55-64 6 28612 206 Yes 55-64 7 2585 28 No 65-74 12663 186 Yes 65-74 10 00 1462 31 No 75-84 10 5317 102 Yes 75-84 Given that we wish to model death rate per 100,000 person years, which of the following is TRUE? O We should use deaths as the response and person. years as an explanatory variable. We should include an offset of log(person.years/100000). O We should divide person.years by deaths and use this as the response. We should take person.years as the response and deaths as an explanatory variable. O We should include an offset of log(person.years)