32. Cora is a widow and has no relatives to whom she wishes to transfer assets at her death. She wants to invest some of her assets into an annuity that will give her the largest periodic payment and will continue for her entire life. Which of the following should she consider? o a. a joint and survivor annuity b. a life annuity with refund period oc. a straight life annuity od. a life annuity with period certain