Kristina just won the lottery, and she must choose among three award options. She can elect to receive a lump sum today of $62million, to receive 10 end-of-year payments of $9.5million, or to receive 30 end-of-year payments of $5.6million

a. If she can earn 7% annually, which option should she choose?

b. IF she can earn 8% annually, which one is best?

c. If she can earn 9% annually which one is best?

d. Explain how interest rates influence her choice.