please help me understand thsi

OLICWOl Score: 0 of 1 pt 15 of 16 (8 complete) HW Score: 40.63%, 6.5 of 1 P4-31 (similar to) Question Help Lottery. Your dreams of becoming rich have just come true. You have won the State of Tranquility's Lottery. The State offers you two payment plans for the $6,000,000 advertised jackpot. You can take annual payments of $150,000 at the end of the year for the next 40 years or $1,999,756 today. a. If your investment rate over the next 40 years is 8%, which payoff will you choose? b. If your investment rate over the next 40 years is 5%, which payoff will you choose? c. At what investment rate will the annuity stream of $150,000 be the same as the lump-sum payment of $1,999,756? a. If your investment rate over the next 40 years is 8%, what is the present value of the $150,000 annual payments today? $ (Round to the nearest dollar.)