Which of the following is true? a. The present value of a future lump sum payment will increase if the time period declines, everything else remaining constant. b. The present value of an annuity due will be greater than the present value of an ordinary annuity. c. Assuming the number of payments related to an ordinary annuity increase, so will the future value of the annuity, everything else held constant. d. Everything else equal, you will accrue more interest if you choose to invest using simple interest versus compound interest. only "a", "b" and "c" are correct only "b" and "c" are correct only "a" and "b" are correct only "c" and "d" are correct "a", "6", "c" and "d" are all correct