How long will it take to save ​$2091.00 by making deposits of ​$106.00 at the end of every month into an account earning interest at 9​% compounded monthly​? State your answer in years and months.
a. 4 years and 1 month
b. 5 years and 2 months
c. 6 years and 3 months
d. 7 years and 4 months