You have a business deal that will pay you $10,000 per year for each of the next 10 years, followed by $15,000 per year for years 11 through 20. If you invest each of these payments and you earn 9% per year, how much will you have at the end of year 20?

a.587,565

b.104840

c.379823

d.511601

e.359671