You purchased a bond at a price of $4,300. In 20 years when the bond matures, the bond will be worth $30,000. It is exactly 16 years after you purchased the bond and you can sell the bond today for $23,250. If you hold the bond until it matures, what annual rate of return will you earn from today?

a)6.6 percent

b)11.1 percent

c)7.3 percent

d)10.2 percent

e)5.9 percent