Arthur and Jeanne Carr estimate that they will need 17,000 to pay for their dream trip to Australia. they now have 8000 which they can invest at an annual rate of 13% compounded quarterly. How long will the Carr's have to wait before they can make their trip?

a.5.89 years

b.6.76 years

c.6.97 years

d. 23.56 years