6. How much do you have to deposit today so that you can withdraw $50,000 a year at the end of years 5 through 9 , and $25,000 at the end of year 10 ? Assume that you can earn an annual rate of 8 percent. a) $170,983 d) $158,318 b) $146,591 e) $159,243 c) $146,737