You want to deposit $5,000 a year starting from the end of this year until the end of the 12th year. After 12 years you realize that you only deposited $3,000 at the end of the sixth year. If the market interest rate is 6%, how much money will you have in your account at the end of the 12th year?

a. $79,687.53

b. $81,512.67

c. $82,939.78

d. $83,349.71

answer is $81,512.67, can someone show in steps