Bill plans to fund his individual retirement account​ (ira) with the maximum contribution of​ $2,000 at the end of each year for the next 20 years. if bill can earn 12 percent on his​ contributions, how much will he have at the end of the twentieth​ year?
a. ​$144,104
b. ​$14,938
c. ​$19,292
d. ​$40,000