marlon has just won some money on a game show! he has the option to take a lump sum payment of $625,000 now or get paid an annuity of $4,500 per month for the next 15 years. assuming the growth rate of the economy is 3.9% compounding annually over the next 15 years, which is the better deal for marlon and by how much?

lump sum: by $299,464.04
lump sum: by $20.387.02
annuity: by $185,000.00
annuity: by $20,387.02