2. According to class discussion, how does an annuity due differ from an ordinary annuity? a. An ordinary annuity goes on forever and an annuity due has an end date. b. An annuity due pays at the end of the period and an ordinary annuity pays at the beginning. C. An annuity due goes on forever and an ordinary due has an end date. d. An annuity due pays at the beginning of the period and an ordinary annuity pays at the end. O A. a. An ordinary annuity goes on forever and an annuity duo has an end date. O B. b. An annuity due pays at the end of the period and an ordinary annuity pays at the beginning. O C. c. An annuity due goes on forever and an ordinary due has an end date. O D. d. An annuity due pays at the beginning of the period and an ordinary annuity pays at the end