You Have Borrowed $20,000 from Your Parents to Pay for Your

You have borrowed $20,000 from your parents to pay for your education.You are going to pay them back in 8 years.They are charging you 2% interest on the loan.The total amount that you will have to pay them in 8 years is closest to:

A) $21,600.
B) $23,200.
C) $23,328.
D) $23,433.