Asthe winner of a song writing competition, you can choose between the prizes listed below. If the interest rate is 9 percent, which prize is the most valuable?

a.$115,000 now.

b.$7,000 next year and increasing by 2.5 percent a year forever.

c.$10,000 a year forever.

d.$165,000 at the end of four years.

e.$18,500 each year for 10 years.