Goldman Investments has offered you the following investment opportunity:

$21,000 at the end of each year for the first 5 years.

$7,800 at the end of each year from year 6 through 10.

How much would you be willing to pay for this investment if you require a 18% rate of return?

a) 61,594.57

b) 90,072.39

c) 78,029.95

d) 69,517.62