You have your choice of two investment accounts. Investment A is a 15-year annuity that features end-of-month $1,500 payments and has an interest rate of 8.7 percent compounded monthly. Investment B is an 8 percent continuously compounded lump-sum investment, also good for 15 years. How much money would you need to invest in B today for it to be worth as much as Investment A 15 years from now?